From 00a41e20938e54efe172101896f0cf01821af2d9 Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Mon, 15 Jun 2026 13:20:17 +1200
Subject: [PATCH] Mark user-configurable classes as final (part 9/21)

Add the C++ `final` specifier to leaf, user-configurable component classes and
automation action/trigger/condition primitives so that classes meant to be
terminal cannot be subclassed by external components. Only classes never used as
a base anywhere in the tree are marked. Part 9 of 21, split alphabetically by
component (internal_temperature .. m5stack_8angle).
---
 .../internal_temperature.h                    |  2 +-
 esphome/components/interval/interval.h        |  2 +-
 esphome/components/ir_rf_proxy/ir_rf_proxy.h  |  4 ++--
 esphome/components/jsn_sr04t/jsn_sr04t.h      |  2 +-
 .../components/kamstrup_kmp/kamstrup_kmp.h    |  2 +-
 .../components/key_collector/key_collector.h  |  6 +++---
 esphome/components/kmeteriso/kmeteriso.h      |  2 +-
 esphome/components/kuntze/kuntze.h            |  2 +-
 esphome/components/lc709203f/lc709203f.h      |  2 +-
 .../components/lcd_gpio/gpio_lcd_display.h    |  2 +-
 esphome/components/lcd_menu/lcd_menu.h        |  2 +-
 .../components/lcd_pcf8574/pcf8574_display.h  |  2 +-
 esphome/components/ld2410/automation.h        |  2 +-
 .../ld2410/button/factory_reset_button.h      |  2 +-
 .../components/ld2410/button/query_button.h   |  2 +-
 .../components/ld2410/button/restart_button.h |  2 +-
 esphome/components/ld2410/ld2410.h            |  2 +-
 .../ld2410/number/gate_threshold_number.h     |  2 +-
 .../ld2410/number/light_threshold_number.h    |  2 +-
 .../number/max_distance_timeout_number.h      |  2 +-
 .../ld2410/select/baud_rate_select.h          |  2 +-
 .../select/distance_resolution_select.h       |  2 +-
 .../ld2410/select/light_out_control_select.h  |  2 +-
 .../ld2410/switch/bluetooth_switch.h          |  2 +-
 .../ld2410/switch/engineering_mode_switch.h   |  2 +-
 .../ld2412/button/factory_reset_button.h      |  2 +-
 .../components/ld2412/button/query_button.h   |  2 +-
 .../components/ld2412/button/restart_button.h |  2 +-
 ...art_dynamic_background_correction_button.h |  2 +-
 esphome/components/ld2412/ld2412.h            |  2 +-
 .../ld2412/number/gate_threshold_number.h     |  2 +-
 .../ld2412/number/light_threshold_number.h    |  2 +-
 .../number/max_distance_timeout_number.h      |  2 +-
 .../ld2412/select/baud_rate_select.h          |  2 +-
 .../select/distance_resolution_select.h       |  2 +-
 .../ld2412/select/light_out_control_select.h  |  2 +-
 .../ld2412/switch/bluetooth_switch.h          |  2 +-
 .../ld2412/switch/engineering_mode_switch.h   |  2 +-
 .../binary_sensor/ld2420_binary_sensor.h      |  2 +-
 .../ld2420/button/reconfig_buttons.h          |  8 ++++----
 esphome/components/ld2420/ld2420.h            |  2 +-
 .../ld2420/number/gate_config_number.h        | 16 +++++++--------
 .../ld2420/select/operating_mode_select.h     |  2 +-
 .../components/ld2420/sensor/ld2420_sensor.h  |  2 +-
 .../ld2420/text_sensor/ld2420_text_sensor.h   |  2 +-
 .../ld2450/button/factory_reset_button.h      |  2 +-
 .../components/ld2450/button/restart_button.h |  2 +-
 esphome/components/ld2450/ld2450.h            |  2 +-
 .../ld2450/number/presence_timeout_number.h   |  2 +-
 .../ld2450/number/zone_coordinate_number.h    |  2 +-
 .../ld2450/select/baud_rate_select.h          |  2 +-
 .../ld2450/select/zone_type_select.h          |  2 +-
 .../ld2450/switch/bluetooth_switch.h          |  2 +-
 .../ld2450/switch/multi_target_switch.h       |  2 +-
 esphome/components/ledc/ledc_output.h         |  4 ++--
 esphome/components/libretiny/gpio_arduino.h   |  2 +-
 esphome/components/libretiny/lt_component.h   |  2 +-
 .../components/libretiny_pwm/libretiny_pwm.h  |  4 ++--
 esphome/components/light/addressable_light.h  |  2 +-
 esphome/components/light/automation.h         | 20 +++++++++----------
 esphome/components/lightwaverf/lightwaverf.h  |  4 ++--
 .../touchscreen/lilygo_t5_47_touchscreen.h    |  2 +-
 esphome/components/lm75b/lm75b.h              |  2 +-
 esphome/components/lock/automation.h          |  8 ++++----
 esphome/components/lps22/lps22.h              |  2 +-
 esphome/components/lsm6ds/lsm6ds.h            |  2 +-
 esphome/components/ltr390/ltr390.h            |  2 +-
 esphome/components/ltr501/ltr501.h            |  2 +-
 esphome/components/lvgl/light/lvgl_light.h    |  2 +-
 esphome/components/lvgl/lvgl_esphome.h        | 16 +++++++--------
 esphome/components/lvgl/number/lvgl_number.h  |  2 +-
 esphome/components/lvgl/select/lvgl_select.h  |  2 +-
 esphome/components/lvgl/switch/lvgl_switch.h  |  2 +-
 esphome/components/lvgl/text/lvgl_text.h      |  2 +-
 .../m5stack_8angle_binary_sensor.h            |  6 +++---
 .../light/m5stack_8angle_light.h              |  2 +-
 .../m5stack_8angle/m5stack_8angle.h           |  2 +-
 .../sensor/m5stack_8angle_sensor.h            |  6 +++---
 78 files changed, 117 insertions(+), 117 deletions(-)

diff --git a/esphome/components/internal_temperature/internal_temperature.h b/esphome/components/internal_temperature/internal_temperature.h
index 41fea5a255..90831cf211 100644
--- a/esphome/components/internal_temperature/internal_temperature.h
+++ b/esphome/components/internal_temperature/internal_temperature.h
@@ -11,7 +11,7 @@
 
 namespace esphome::internal_temperature {
 
-class InternalTemperatureSensor : public sensor::Sensor, public PollingComponent {
+class InternalTemperatureSensor final : public sensor::Sensor, public PollingComponent {
  public:
 #if defined(USE_ESP32) || (defined(USE_ZEPHYR) && defined(USE_NRF52))
   void setup() override;
diff --git a/esphome/components/interval/interval.h b/esphome/components/interval/interval.h
index c9d4e8ea3e..fd59d2a488 100644
--- a/esphome/components/interval/interval.h
+++ b/esphome/components/interval/interval.h
@@ -6,7 +6,7 @@
 
 namespace esphome::interval {
 
-class IntervalTrigger : public Trigger<>, public PollingComponent {
+class IntervalTrigger final : public Trigger<>, public PollingComponent {
  public:
   void update() override { this->trigger(); }
 
diff --git a/esphome/components/ir_rf_proxy/ir_rf_proxy.h b/esphome/components/ir_rf_proxy/ir_rf_proxy.h
index d0467e822d..5fc683354b 100644
--- a/esphome/components/ir_rf_proxy/ir_rf_proxy.h
+++ b/esphome/components/ir_rf_proxy/ir_rf_proxy.h
@@ -18,7 +18,7 @@ namespace esphome::ir_rf_proxy {
 
 #ifdef USE_IR_RF
 /// IrRfProxy - Infrared platform implementation using remote_transmitter/receiver as backend
-class IrRfProxy : public infrared::Infrared {
+class IrRfProxy final : public infrared::Infrared {
  public:
   IrRfProxy() = default;
 
@@ -47,7 +47,7 @@ class IrRfProxy : public infrared::Infrared {
 /// Driver-agnostic: integration with specific RF front-end chips (CC1101, RFM69, etc.) is done
 /// in YAML by wiring their actions to `remote_transmitter`'s on_transmit/on_complete triggers and
 /// to this entity's on_control trigger (see radio_frequency component docs).
-class RfProxy : public radio_frequency::RadioFrequency {
+class RfProxy final : public radio_frequency::RadioFrequency {
  public:
   RfProxy() = default;
 
diff --git a/esphome/components/jsn_sr04t/jsn_sr04t.h b/esphome/components/jsn_sr04t/jsn_sr04t.h
index f9d07ea539..5368ec683c 100644
--- a/esphome/components/jsn_sr04t/jsn_sr04t.h
+++ b/esphome/components/jsn_sr04t/jsn_sr04t.h
@@ -13,7 +13,7 @@ enum Model {
   AJ_SR04M,
 };
 
-class Jsnsr04tComponent : public sensor::Sensor, public PollingComponent, public uart::UARTDevice {
+class Jsnsr04tComponent final : public sensor::Sensor, public PollingComponent, public uart::UARTDevice {
  public:
   void set_model(Model model) { this->model_ = model; }
 
diff --git a/esphome/components/kamstrup_kmp/kamstrup_kmp.h b/esphome/components/kamstrup_kmp/kamstrup_kmp.h
index a4eacec453..57a89f77a1 100644
--- a/esphome/components/kamstrup_kmp/kamstrup_kmp.h
+++ b/esphome/components/kamstrup_kmp/kamstrup_kmp.h
@@ -73,7 +73,7 @@ static const char *const UNITS[] = {
     "mm:dd", "",     "bar",  "RTC",   "ASCII",   "m3 x 10", "ton x 10", "GJ x 10",  "minutes",  "Bitfield",
     "s",     "ms",   "days", "RTC-Q", "Datetime"};
 
-class KamstrupKMPComponent : public PollingComponent, public uart::UARTDevice {
+class KamstrupKMPComponent final : public PollingComponent, public uart::UARTDevice {
  public:
   void set_heat_energy_sensor(sensor::Sensor *sensor) { this->heat_energy_sensor_ = sensor; }
   void set_power_sensor(sensor::Sensor *sensor) { this->power_sensor_ = sensor; }
diff --git a/esphome/components/key_collector/key_collector.h b/esphome/components/key_collector/key_collector.h
index 27209c50df..c9eeabeb2d 100644
--- a/esphome/components/key_collector/key_collector.h
+++ b/esphome/components/key_collector/key_collector.h
@@ -7,7 +7,7 @@
 
 namespace esphome::key_collector {
 
-class KeyCollector : public Component {
+class KeyCollector final : public Component {
  public:
   void loop() override;
   void dump_config() override;
@@ -54,11 +54,11 @@ class KeyCollector : public Component {
   bool enabled_{};
 };
 
-template<typename... Ts> class EnableAction : public Action<Ts...>, public Parented<KeyCollector> {
+template<typename... Ts> class EnableAction final : public Action<Ts...>, public Parented<KeyCollector> {
   void play(const Ts &...x) override { this->parent_->set_enabled(true); }
 };
 
-template<typename... Ts> class DisableAction : public Action<Ts...>, public Parented<KeyCollector> {
+template<typename... Ts> class DisableAction final : public Action<Ts...>, public Parented<KeyCollector> {
   void play(const Ts &...x) override { this->parent_->set_enabled(false); }
 };
 
diff --git a/esphome/components/kmeteriso/kmeteriso.h b/esphome/components/kmeteriso/kmeteriso.h
index d5a2f9a01b..bd92a6011f 100644
--- a/esphome/components/kmeteriso/kmeteriso.h
+++ b/esphome/components/kmeteriso/kmeteriso.h
@@ -8,7 +8,7 @@
 namespace esphome::kmeteriso {
 
 /// This class implements support for the KMeterISO thermocouple sensor.
-class KMeterISOComponent : public PollingComponent, public i2c::I2CDevice {
+class KMeterISOComponent final : public PollingComponent, public i2c::I2CDevice {
  public:
   void set_temperature_sensor(sensor::Sensor *t) { this->temperature_sensor_ = t; }
   void set_internal_temperature_sensor(sensor::Sensor *t) { this->internal_temperature_sensor_ = t; }
diff --git a/esphome/components/kuntze/kuntze.h b/esphome/components/kuntze/kuntze.h
index bbd93a22ce..99dd78e5b6 100644
--- a/esphome/components/kuntze/kuntze.h
+++ b/esphome/components/kuntze/kuntze.h
@@ -6,7 +6,7 @@
 
 namespace esphome::kuntze {
 
-class Kuntze : public PollingComponent, public modbus::ModbusDevice {
+class Kuntze final : public PollingComponent, public modbus::ModbusDevice {
  public:
   void set_ph_sensor(sensor::Sensor *ph_sensor) { ph_sensor_ = ph_sensor; }
   void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }
diff --git a/esphome/components/lc709203f/lc709203f.h b/esphome/components/lc709203f/lc709203f.h
index 42aa9a15a1..46f773873a 100644
--- a/esphome/components/lc709203f/lc709203f.h
+++ b/esphome/components/lc709203f/lc709203f.h
@@ -19,7 +19,7 @@ enum LC709203FBatteryVoltage {
   LC709203F_BATTERY_VOLTAGE_3_7 = 0x0001,
 };
 
-class Lc709203f : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
+class Lc709203f final : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void update() override;
diff --git a/esphome/components/lcd_gpio/gpio_lcd_display.h b/esphome/components/lcd_gpio/gpio_lcd_display.h
index dd9ea5929c..17fcf7ea23 100644
--- a/esphome/components/lcd_gpio/gpio_lcd_display.h
+++ b/esphome/components/lcd_gpio/gpio_lcd_display.h
@@ -10,7 +10,7 @@ class GPIOLCDDisplay;
 
 using gpio_lcd_writer_t = display::DisplayWriter<GPIOLCDDisplay>;
 
-class GPIOLCDDisplay : public lcd_base::LCDDisplay {
+class GPIOLCDDisplay final : public lcd_base::LCDDisplay {
  public:
   void set_writer(gpio_lcd_writer_t &&writer) { this->writer_ = std::move(writer); }
   void setup() override;
diff --git a/esphome/components/lcd_menu/lcd_menu.h b/esphome/components/lcd_menu/lcd_menu.h
index ae1c2502fe..6fa61fdf6a 100644
--- a/esphome/components/lcd_menu/lcd_menu.h
+++ b/esphome/components/lcd_menu/lcd_menu.h
@@ -11,7 +11,7 @@ namespace esphome::lcd_menu {
 /** Class to display a hierarchical menu.
  *
  */
-class LCDCharacterMenuComponent : public display_menu_base::DisplayMenuComponent {
+class LCDCharacterMenuComponent final : public display_menu_base::DisplayMenuComponent {
  public:
   void set_display(lcd_base::LCDDisplay *display) { this->display_ = display; }
   void set_dimensions(uint8_t columns, uint8_t rows) {
diff --git a/esphome/components/lcd_pcf8574/pcf8574_display.h b/esphome/components/lcd_pcf8574/pcf8574_display.h
index 9ec5ad71af..5af087add5 100644
--- a/esphome/components/lcd_pcf8574/pcf8574_display.h
+++ b/esphome/components/lcd_pcf8574/pcf8574_display.h
@@ -11,7 +11,7 @@ class PCF8574LCDDisplay;
 
 using pcf8574_lcd_writer_t = display::DisplayWriter<PCF8574LCDDisplay>;
 
-class PCF8574LCDDisplay : public lcd_base::LCDDisplay, public i2c::I2CDevice {
+class PCF8574LCDDisplay final : public lcd_base::LCDDisplay, public i2c::I2CDevice {
  public:
   void set_writer(pcf8574_lcd_writer_t &&writer) { this->writer_ = std::move(writer); }
   void setup() override;
diff --git a/esphome/components/ld2410/automation.h b/esphome/components/ld2410/automation.h
index 614453b575..b0b9591d37 100644
--- a/esphome/components/ld2410/automation.h
+++ b/esphome/components/ld2410/automation.h
@@ -6,7 +6,7 @@
 
 namespace esphome::ld2410 {
 
-template<typename... Ts> class BluetoothPasswordSetAction : public Action<Ts...> {
+template<typename... Ts> class BluetoothPasswordSetAction final : public Action<Ts...> {
  public:
   explicit BluetoothPasswordSetAction(LD2410Component *ld2410_comp) : ld2410_comp_(ld2410_comp) {}
   TEMPLATABLE_VALUE(std::string, password)
diff --git a/esphome/components/ld2410/button/factory_reset_button.h b/esphome/components/ld2410/button/factory_reset_button.h
index 715a8c4056..1da7c81337 100644
--- a/esphome/components/ld2410/button/factory_reset_button.h
+++ b/esphome/components/ld2410/button/factory_reset_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class FactoryResetButton : public button::Button, public Parented<LD2410Component> {
+class FactoryResetButton final : public button::Button, public Parented<LD2410Component> {
  public:
   FactoryResetButton() = default;
 
diff --git a/esphome/components/ld2410/button/query_button.h b/esphome/components/ld2410/button/query_button.h
index 7a786901ae..4f3f147e67 100644
--- a/esphome/components/ld2410/button/query_button.h
+++ b/esphome/components/ld2410/button/query_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class QueryButton : public button::Button, public Parented<LD2410Component> {
+class QueryButton final : public button::Button, public Parented<LD2410Component> {
  public:
   QueryButton() = default;
 
diff --git a/esphome/components/ld2410/button/restart_button.h b/esphome/components/ld2410/button/restart_button.h
index 9bf8639a8c..70e0a74c9a 100644
--- a/esphome/components/ld2410/button/restart_button.h
+++ b/esphome/components/ld2410/button/restart_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class RestartButton : public button::Button, public Parented<LD2410Component> {
+class RestartButton final : public button::Button, public Parented<LD2410Component> {
  public:
   RestartButton() = default;
 
diff --git a/esphome/components/ld2410/ld2410.h b/esphome/components/ld2410/ld2410.h
index 31186b135f..a0cce36d16 100644
--- a/esphome/components/ld2410/ld2410.h
+++ b/esphome/components/ld2410/ld2410.h
@@ -38,7 +38,7 @@ using namespace ld24xx;
 static constexpr uint8_t MAX_LINE_LENGTH = 50;
 static constexpr uint8_t TOTAL_GATES = 9;  // Total number of gates supported by the LD2410
 
-class LD2410Component : public Component, public uart::UARTDevice {
+class LD2410Component final : public Component, public uart::UARTDevice {
 #ifdef USE_BINARY_SENSOR
   SUB_BINARY_SENSOR(out_pin_presence_status)
   SUB_BINARY_SENSOR(moving_target)
diff --git a/esphome/components/ld2410/number/gate_threshold_number.h b/esphome/components/ld2410/number/gate_threshold_number.h
index 63491f18d3..68359a10d4 100644
--- a/esphome/components/ld2410/number/gate_threshold_number.h
+++ b/esphome/components/ld2410/number/gate_threshold_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class GateThresholdNumber : public number::Number, public Parented<LD2410Component> {
+class GateThresholdNumber final : public number::Number, public Parented<LD2410Component> {
  public:
   GateThresholdNumber(uint8_t gate);
 
diff --git a/esphome/components/ld2410/number/light_threshold_number.h b/esphome/components/ld2410/number/light_threshold_number.h
index 3c5e433416..6e1a5ca4a4 100644
--- a/esphome/components/ld2410/number/light_threshold_number.h
+++ b/esphome/components/ld2410/number/light_threshold_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class LightThresholdNumber : public number::Number, public Parented<LD2410Component> {
+class LightThresholdNumber final : public number::Number, public Parented<LD2410Component> {
  public:
   LightThresholdNumber() = default;
 
diff --git a/esphome/components/ld2410/number/max_distance_timeout_number.h b/esphome/components/ld2410/number/max_distance_timeout_number.h
index 35f4cbbfae..29b19c2022 100644
--- a/esphome/components/ld2410/number/max_distance_timeout_number.h
+++ b/esphome/components/ld2410/number/max_distance_timeout_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class MaxDistanceTimeoutNumber : public number::Number, public Parented<LD2410Component> {
+class MaxDistanceTimeoutNumber final : public number::Number, public Parented<LD2410Component> {
  public:
   MaxDistanceTimeoutNumber() = default;
 
diff --git a/esphome/components/ld2410/select/baud_rate_select.h b/esphome/components/ld2410/select/baud_rate_select.h
index fb1d016b1f..b06ce139ad 100644
--- a/esphome/components/ld2410/select/baud_rate_select.h
+++ b/esphome/components/ld2410/select/baud_rate_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class BaudRateSelect : public select::Select, public Parented<LD2410Component> {
+class BaudRateSelect final : public select::Select, public Parented<LD2410Component> {
  public:
   BaudRateSelect() = default;
 
diff --git a/esphome/components/ld2410/select/distance_resolution_select.h b/esphome/components/ld2410/select/distance_resolution_select.h
index be2389d36e..0c5409b7b1 100644
--- a/esphome/components/ld2410/select/distance_resolution_select.h
+++ b/esphome/components/ld2410/select/distance_resolution_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class DistanceResolutionSelect : public select::Select, public Parented<LD2410Component> {
+class DistanceResolutionSelect final : public select::Select, public Parented<LD2410Component> {
  public:
   DistanceResolutionSelect() = default;
 
diff --git a/esphome/components/ld2410/select/light_out_control_select.h b/esphome/components/ld2410/select/light_out_control_select.h
index 608c311af4..a8a16598b1 100644
--- a/esphome/components/ld2410/select/light_out_control_select.h
+++ b/esphome/components/ld2410/select/light_out_control_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class LightOutControlSelect : public select::Select, public Parented<LD2410Component> {
+class LightOutControlSelect final : public select::Select, public Parented<LD2410Component> {
  public:
   LightOutControlSelect() = default;
 
diff --git a/esphome/components/ld2410/switch/bluetooth_switch.h b/esphome/components/ld2410/switch/bluetooth_switch.h
index 07804e2292..cc56b2cda0 100644
--- a/esphome/components/ld2410/switch/bluetooth_switch.h
+++ b/esphome/components/ld2410/switch/bluetooth_switch.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class BluetoothSwitch : public switch_::Switch, public Parented<LD2410Component> {
+class BluetoothSwitch final : public switch_::Switch, public Parented<LD2410Component> {
  public:
   BluetoothSwitch() = default;
 
diff --git a/esphome/components/ld2410/switch/engineering_mode_switch.h b/esphome/components/ld2410/switch/engineering_mode_switch.h
index 4dd8e16653..49243a73ad 100644
--- a/esphome/components/ld2410/switch/engineering_mode_switch.h
+++ b/esphome/components/ld2410/switch/engineering_mode_switch.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2410 {
 
-class EngineeringModeSwitch : public switch_::Switch, public Parented<LD2410Component> {
+class EngineeringModeSwitch final : public switch_::Switch, public Parented<LD2410Component> {
  public:
   EngineeringModeSwitch() = default;
 
diff --git a/esphome/components/ld2412/button/factory_reset_button.h b/esphome/components/ld2412/button/factory_reset_button.h
index 1ef6b23b80..a6ea8f7365 100644
--- a/esphome/components/ld2412/button/factory_reset_button.h
+++ b/esphome/components/ld2412/button/factory_reset_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class FactoryResetButton : public button::Button, public Parented<LD2412Component> {
+class FactoryResetButton final : public button::Button, public Parented<LD2412Component> {
  public:
   FactoryResetButton() = default;
 
diff --git a/esphome/components/ld2412/button/query_button.h b/esphome/components/ld2412/button/query_button.h
index 373e135802..71e2ab14e8 100644
--- a/esphome/components/ld2412/button/query_button.h
+++ b/esphome/components/ld2412/button/query_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class QueryButton : public button::Button, public Parented<LD2412Component> {
+class QueryButton final : public button::Button, public Parented<LD2412Component> {
  public:
   QueryButton() = default;
 
diff --git a/esphome/components/ld2412/button/restart_button.h b/esphome/components/ld2412/button/restart_button.h
index 80c79f5e7d..668ce1a8e6 100644
--- a/esphome/components/ld2412/button/restart_button.h
+++ b/esphome/components/ld2412/button/restart_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class RestartButton : public button::Button, public Parented<LD2412Component> {
+class RestartButton final : public button::Button, public Parented<LD2412Component> {
  public:
   RestartButton() = default;
 
diff --git a/esphome/components/ld2412/button/start_dynamic_background_correction_button.h b/esphome/components/ld2412/button/start_dynamic_background_correction_button.h
index b1f2127896..3b24f5dcf8 100644
--- a/esphome/components/ld2412/button/start_dynamic_background_correction_button.h
+++ b/esphome/components/ld2412/button/start_dynamic_background_correction_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class StartDynamicBackgroundCorrectionButton : public button::Button, public Parented<LD2412Component> {
+class StartDynamicBackgroundCorrectionButton final : public button::Button, public Parented<LD2412Component> {
  public:
   StartDynamicBackgroundCorrectionButton() = default;
 
diff --git a/esphome/components/ld2412/ld2412.h b/esphome/components/ld2412/ld2412.h
index 306e7ae31d..f722f938ae 100644
--- a/esphome/components/ld2412/ld2412.h
+++ b/esphome/components/ld2412/ld2412.h
@@ -36,7 +36,7 @@ using namespace ld24xx;
 static constexpr uint8_t MAX_LINE_LENGTH = 54;  // Max characters for serial buffer
 static constexpr uint8_t TOTAL_GATES = 14;      // Total number of gates supported by the LD2412
 
-class LD2412Component : public Component, public uart::UARTDevice {
+class LD2412Component final : public Component, public uart::UARTDevice {
 #ifdef USE_BINARY_SENSOR
   SUB_BINARY_SENSOR(dynamic_background_correction_status)
   SUB_BINARY_SENSOR(moving_target)
diff --git a/esphome/components/ld2412/number/gate_threshold_number.h b/esphome/components/ld2412/number/gate_threshold_number.h
index 78c2e54d82..918b6dfad1 100644
--- a/esphome/components/ld2412/number/gate_threshold_number.h
+++ b/esphome/components/ld2412/number/gate_threshold_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class GateThresholdNumber : public number::Number, public Parented<LD2412Component> {
+class GateThresholdNumber final : public number::Number, public Parented<LD2412Component> {
  public:
   GateThresholdNumber(uint8_t gate);
 
diff --git a/esphome/components/ld2412/number/light_threshold_number.h b/esphome/components/ld2412/number/light_threshold_number.h
index 81fd73111c..f62d523af3 100644
--- a/esphome/components/ld2412/number/light_threshold_number.h
+++ b/esphome/components/ld2412/number/light_threshold_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class LightThresholdNumber : public number::Number, public Parented<LD2412Component> {
+class LightThresholdNumber final : public number::Number, public Parented<LD2412Component> {
  public:
   LightThresholdNumber() = default;
 
diff --git a/esphome/components/ld2412/number/max_distance_timeout_number.h b/esphome/components/ld2412/number/max_distance_timeout_number.h
index c1e947fa19..4a3478d48a 100644
--- a/esphome/components/ld2412/number/max_distance_timeout_number.h
+++ b/esphome/components/ld2412/number/max_distance_timeout_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class MaxDistanceTimeoutNumber : public number::Number, public Parented<LD2412Component> {
+class MaxDistanceTimeoutNumber final : public number::Number, public Parented<LD2412Component> {
  public:
   MaxDistanceTimeoutNumber() = default;
 
diff --git a/esphome/components/ld2412/select/baud_rate_select.h b/esphome/components/ld2412/select/baud_rate_select.h
index 4666dd2fa0..46ec9be1d1 100644
--- a/esphome/components/ld2412/select/baud_rate_select.h
+++ b/esphome/components/ld2412/select/baud_rate_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class BaudRateSelect : public select::Select, public Parented<LD2412Component> {
+class BaudRateSelect final : public select::Select, public Parented<LD2412Component> {
  public:
   BaudRateSelect() = default;
 
diff --git a/esphome/components/ld2412/select/distance_resolution_select.h b/esphome/components/ld2412/select/distance_resolution_select.h
index d3b7fad2f9..be8dba90b5 100644
--- a/esphome/components/ld2412/select/distance_resolution_select.h
+++ b/esphome/components/ld2412/select/distance_resolution_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class DistanceResolutionSelect : public select::Select, public Parented<LD2412Component> {
+class DistanceResolutionSelect final : public select::Select, public Parented<LD2412Component> {
  public:
   DistanceResolutionSelect() = default;
 
diff --git a/esphome/components/ld2412/select/light_out_control_select.h b/esphome/components/ld2412/select/light_out_control_select.h
index 9f86189878..c8988fda78 100644
--- a/esphome/components/ld2412/select/light_out_control_select.h
+++ b/esphome/components/ld2412/select/light_out_control_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class LightOutControlSelect : public select::Select, public Parented<LD2412Component> {
+class LightOutControlSelect final : public select::Select, public Parented<LD2412Component> {
  public:
   LightOutControlSelect() = default;
 
diff --git a/esphome/components/ld2412/switch/bluetooth_switch.h b/esphome/components/ld2412/switch/bluetooth_switch.h
index 0c0d1fa550..8fd4a86e43 100644
--- a/esphome/components/ld2412/switch/bluetooth_switch.h
+++ b/esphome/components/ld2412/switch/bluetooth_switch.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class BluetoothSwitch : public switch_::Switch, public Parented<LD2412Component> {
+class BluetoothSwitch final : public switch_::Switch, public Parented<LD2412Component> {
  public:
   BluetoothSwitch() = default;
 
diff --git a/esphome/components/ld2412/switch/engineering_mode_switch.h b/esphome/components/ld2412/switch/engineering_mode_switch.h
index 4e75a8a185..defeb4c76b 100644
--- a/esphome/components/ld2412/switch/engineering_mode_switch.h
+++ b/esphome/components/ld2412/switch/engineering_mode_switch.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2412 {
 
-class EngineeringModeSwitch : public switch_::Switch, public Parented<LD2412Component> {
+class EngineeringModeSwitch final : public switch_::Switch, public Parented<LD2412Component> {
  public:
   EngineeringModeSwitch() = default;
 
diff --git a/esphome/components/ld2420/binary_sensor/ld2420_binary_sensor.h b/esphome/components/ld2420/binary_sensor/ld2420_binary_sensor.h
index ec52312f92..5f63b31e87 100644
--- a/esphome/components/ld2420/binary_sensor/ld2420_binary_sensor.h
+++ b/esphome/components/ld2420/binary_sensor/ld2420_binary_sensor.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2420 {
 
-class LD2420BinarySensor : public LD2420Listener, public Component, binary_sensor::BinarySensor {
+class LD2420BinarySensor final : public LD2420Listener, public Component, binary_sensor::BinarySensor {
  public:
   void dump_config() override;
   void set_presence_sensor(binary_sensor::BinarySensor *bsensor) { this->presence_bsensor_ = bsensor; };
diff --git a/esphome/components/ld2420/button/reconfig_buttons.h b/esphome/components/ld2420/button/reconfig_buttons.h
index 72171ef386..b769e18a46 100644
--- a/esphome/components/ld2420/button/reconfig_buttons.h
+++ b/esphome/components/ld2420/button/reconfig_buttons.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2420 {
 
-class LD2420ApplyConfigButton : public button::Button, public Parented<LD2420Component> {
+class LD2420ApplyConfigButton final : public button::Button, public Parented<LD2420Component> {
  public:
   LD2420ApplyConfigButton() = default;
 
@@ -13,7 +13,7 @@ class LD2420ApplyConfigButton : public button::Button, public Parented<LD2420Com
   void press_action() override;
 };
 
-class LD2420RevertConfigButton : public button::Button, public Parented<LD2420Component> {
+class LD2420RevertConfigButton final : public button::Button, public Parented<LD2420Component> {
  public:
   LD2420RevertConfigButton() = default;
 
@@ -21,7 +21,7 @@ class LD2420RevertConfigButton : public button::Button, public Parented<LD2420Co
   void press_action() override;
 };
 
-class LD2420RestartModuleButton : public button::Button, public Parented<LD2420Component> {
+class LD2420RestartModuleButton final : public button::Button, public Parented<LD2420Component> {
  public:
   LD2420RestartModuleButton() = default;
 
@@ -29,7 +29,7 @@ class LD2420RestartModuleButton : public button::Button, public Parented<LD2420C
   void press_action() override;
 };
 
-class LD2420FactoryResetButton : public button::Button, public Parented<LD2420Component> {
+class LD2420FactoryResetButton final : public button::Button, public Parented<LD2420Component> {
  public:
   LD2420FactoryResetButton() = default;
 
diff --git a/esphome/components/ld2420/ld2420.h b/esphome/components/ld2420/ld2420.h
index 358793fe64..ae44b16065 100644
--- a/esphome/components/ld2420/ld2420.h
+++ b/esphome/components/ld2420/ld2420.h
@@ -40,7 +40,7 @@ class LD2420Listener {
   virtual void on_fw_version(std::string &fw){};
 };
 
-class LD2420Component : public Component, public uart::UARTDevice {
+class LD2420Component final : public Component, public uart::UARTDevice {
  public:
   struct CmdFrameT {
     uint32_t header{0};
diff --git a/esphome/components/ld2420/number/gate_config_number.h b/esphome/components/ld2420/number/gate_config_number.h
index 8a8b9c61b1..e1c12e023a 100644
--- a/esphome/components/ld2420/number/gate_config_number.h
+++ b/esphome/components/ld2420/number/gate_config_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2420 {
 
-class LD2420TimeoutNumber : public number::Number, public Parented<LD2420Component> {
+class LD2420TimeoutNumber final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420TimeoutNumber() = default;
 
@@ -13,7 +13,7 @@ class LD2420TimeoutNumber : public number::Number, public Parented<LD2420Compone
   void control(float timeout) override;
 };
 
-class LD2420MinDistanceNumber : public number::Number, public Parented<LD2420Component> {
+class LD2420MinDistanceNumber final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420MinDistanceNumber() = default;
 
@@ -21,7 +21,7 @@ class LD2420MinDistanceNumber : public number::Number, public Parented<LD2420Com
   void control(float min_gate) override;
 };
 
-class LD2420MaxDistanceNumber : public number::Number, public Parented<LD2420Component> {
+class LD2420MaxDistanceNumber final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420MaxDistanceNumber() = default;
 
@@ -29,7 +29,7 @@ class LD2420MaxDistanceNumber : public number::Number, public Parented<LD2420Com
   void control(float max_gate) override;
 };
 
-class LD2420GateSelectNumber : public number::Number, public Parented<LD2420Component> {
+class LD2420GateSelectNumber final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420GateSelectNumber() = default;
 
@@ -37,7 +37,7 @@ class LD2420GateSelectNumber : public number::Number, public Parented<LD2420Comp
   void control(float gate_select) override;
 };
 
-class LD2420MoveSensFactorNumber : public number::Number, public Parented<LD2420Component> {
+class LD2420MoveSensFactorNumber final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420MoveSensFactorNumber() = default;
 
@@ -45,7 +45,7 @@ class LD2420MoveSensFactorNumber : public number::Number, public Parented<LD2420
   void control(float move_factor) override;
 };
 
-class LD2420StillSensFactorNumber : public number::Number, public Parented<LD2420Component> {
+class LD2420StillSensFactorNumber final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420StillSensFactorNumber() = default;
 
@@ -53,7 +53,7 @@ class LD2420StillSensFactorNumber : public number::Number, public Parented<LD242
   void control(float still_factor) override;
 };
 
-class LD2420StillThresholdNumbers : public number::Number, public Parented<LD2420Component> {
+class LD2420StillThresholdNumbers final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420StillThresholdNumbers() = default;
   LD2420StillThresholdNumbers(uint8_t gate);
@@ -63,7 +63,7 @@ class LD2420StillThresholdNumbers : public number::Number, public Parented<LD242
   void control(float still_threshold) override;
 };
 
-class LD2420MoveThresholdNumbers : public number::Number, public Parented<LD2420Component> {
+class LD2420MoveThresholdNumbers final : public number::Number, public Parented<LD2420Component> {
  public:
   LD2420MoveThresholdNumbers() = default;
   LD2420MoveThresholdNumbers(uint8_t gate);
diff --git a/esphome/components/ld2420/select/operating_mode_select.h b/esphome/components/ld2420/select/operating_mode_select.h
index c1b8e0b11b..e5eb5d82bd 100644
--- a/esphome/components/ld2420/select/operating_mode_select.h
+++ b/esphome/components/ld2420/select/operating_mode_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2420 {
 
-class LD2420Select : public Component, public select::Select, public Parented<LD2420Component> {
+class LD2420Select final : public Component, public select::Select, public Parented<LD2420Component> {
  public:
   LD2420Select() = default;
 
diff --git a/esphome/components/ld2420/sensor/ld2420_sensor.h b/esphome/components/ld2420/sensor/ld2420_sensor.h
index 4849cfa047..5e50dc45b1 100644
--- a/esphome/components/ld2420/sensor/ld2420_sensor.h
+++ b/esphome/components/ld2420/sensor/ld2420_sensor.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2420 {
 
-class LD2420Sensor : public LD2420Listener, public Component, sensor::Sensor {
+class LD2420Sensor final : public LD2420Listener, public Component, sensor::Sensor {
  public:
   void dump_config() override;
   void set_distance_sensor(sensor::Sensor *sensor) { this->distance_sensor_ = sensor; }
diff --git a/esphome/components/ld2420/text_sensor/ld2420_text_sensor.h b/esphome/components/ld2420/text_sensor/ld2420_text_sensor.h
index 1932eaaf69..60d1e74097 100644
--- a/esphome/components/ld2420/text_sensor/ld2420_text_sensor.h
+++ b/esphome/components/ld2420/text_sensor/ld2420_text_sensor.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2420 {
 
-class LD2420TextSensor : public LD2420Listener, public Component, text_sensor::TextSensor {
+class LD2420TextSensor final : public LD2420Listener, public Component, text_sensor::TextSensor {
  public:
   void dump_config() override;
   void set_fw_version_text_sensor(text_sensor::TextSensor *tsensor) { this->fw_version_text_sensor_ = tsensor; };
diff --git a/esphome/components/ld2450/button/factory_reset_button.h b/esphome/components/ld2450/button/factory_reset_button.h
index 392fc67ffd..83ad2ffd8c 100644
--- a/esphome/components/ld2450/button/factory_reset_button.h
+++ b/esphome/components/ld2450/button/factory_reset_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class FactoryResetButton : public button::Button, public Parented<LD2450Component> {
+class FactoryResetButton final : public button::Button, public Parented<LD2450Component> {
  public:
   FactoryResetButton() = default;
 
diff --git a/esphome/components/ld2450/button/restart_button.h b/esphome/components/ld2450/button/restart_button.h
index 9219011f8b..9a5c912a43 100644
--- a/esphome/components/ld2450/button/restart_button.h
+++ b/esphome/components/ld2450/button/restart_button.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class RestartButton : public button::Button, public Parented<LD2450Component> {
+class RestartButton final : public button::Button, public Parented<LD2450Component> {
  public:
   RestartButton() = default;
 
diff --git a/esphome/components/ld2450/ld2450.h b/esphome/components/ld2450/ld2450.h
index 10f9bb874a..48750e95e3 100644
--- a/esphome/components/ld2450/ld2450.h
+++ b/esphome/components/ld2450/ld2450.h
@@ -75,7 +75,7 @@ struct ZoneOfNumbers {
 };
 #endif
 
-class LD2450Component : public Component, public uart::UARTDevice {
+class LD2450Component final : public Component, public uart::UARTDevice {
 #ifdef USE_BINARY_SENSOR
   SUB_BINARY_SENSOR(moving_target)
   SUB_BINARY_SENSOR(still_target)
diff --git a/esphome/components/ld2450/number/presence_timeout_number.h b/esphome/components/ld2450/number/presence_timeout_number.h
index 09c8afca55..e58be1b8ee 100644
--- a/esphome/components/ld2450/number/presence_timeout_number.h
+++ b/esphome/components/ld2450/number/presence_timeout_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class PresenceTimeoutNumber : public number::Number, public Parented<LD2450Component> {
+class PresenceTimeoutNumber final : public number::Number, public Parented<LD2450Component> {
  public:
   PresenceTimeoutNumber() = default;
 
diff --git a/esphome/components/ld2450/number/zone_coordinate_number.h b/esphome/components/ld2450/number/zone_coordinate_number.h
index f5a389d712..65ec7f91c4 100644
--- a/esphome/components/ld2450/number/zone_coordinate_number.h
+++ b/esphome/components/ld2450/number/zone_coordinate_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class ZoneCoordinateNumber : public number::Number, public Parented<LD2450Component> {
+class ZoneCoordinateNumber final : public number::Number, public Parented<LD2450Component> {
  public:
   ZoneCoordinateNumber(uint8_t zone);
 
diff --git a/esphome/components/ld2450/select/baud_rate_select.h b/esphome/components/ld2450/select/baud_rate_select.h
index cb53118170..abaed25d01 100644
--- a/esphome/components/ld2450/select/baud_rate_select.h
+++ b/esphome/components/ld2450/select/baud_rate_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class BaudRateSelect : public select::Select, public Parented<LD2450Component> {
+class BaudRateSelect final : public select::Select, public Parented<LD2450Component> {
  public:
   BaudRateSelect() = default;
 
diff --git a/esphome/components/ld2450/select/zone_type_select.h b/esphome/components/ld2450/select/zone_type_select.h
index 566346eb48..b145899a29 100644
--- a/esphome/components/ld2450/select/zone_type_select.h
+++ b/esphome/components/ld2450/select/zone_type_select.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class ZoneTypeSelect : public select::Select, public Parented<LD2450Component> {
+class ZoneTypeSelect final : public select::Select, public Parented<LD2450Component> {
  public:
   ZoneTypeSelect() = default;
 
diff --git a/esphome/components/ld2450/switch/bluetooth_switch.h b/esphome/components/ld2450/switch/bluetooth_switch.h
index 3d48a89b57..af8707a546 100644
--- a/esphome/components/ld2450/switch/bluetooth_switch.h
+++ b/esphome/components/ld2450/switch/bluetooth_switch.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class BluetoothSwitch : public switch_::Switch, public Parented<LD2450Component> {
+class BluetoothSwitch final : public switch_::Switch, public Parented<LD2450Component> {
  public:
   BluetoothSwitch() = default;
 
diff --git a/esphome/components/ld2450/switch/multi_target_switch.h b/esphome/components/ld2450/switch/multi_target_switch.h
index 739f308cce..d484fc2364 100644
--- a/esphome/components/ld2450/switch/multi_target_switch.h
+++ b/esphome/components/ld2450/switch/multi_target_switch.h
@@ -5,7 +5,7 @@
 
 namespace esphome::ld2450 {
 
-class MultiTargetSwitch : public switch_::Switch, public Parented<LD2450Component> {
+class MultiTargetSwitch final : public switch_::Switch, public Parented<LD2450Component> {
  public:
   MultiTargetSwitch() = default;
 
diff --git a/esphome/components/ledc/ledc_output.h b/esphome/components/ledc/ledc_output.h
index bf5cdb9305..b0a243f2e4 100644
--- a/esphome/components/ledc/ledc_output.h
+++ b/esphome/components/ledc/ledc_output.h
@@ -13,7 +13,7 @@ namespace esphome::ledc {
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 extern uint8_t next_ledc_channel;
 
-class LEDCOutput : public output::FloatOutput, public Component {
+class LEDCOutput final : public output::FloatOutput, public Component {
  public:
   explicit LEDCOutput(InternalGPIOPin *pin) : pin_(pin) { this->channel_ = next_ledc_channel++; }
 
@@ -43,7 +43,7 @@ class LEDCOutput : public output::FloatOutput, public Component {
   bool initialized_ = false;
 };
 
-template<typename... Ts> class SetFrequencyAction : public Action<Ts...> {
+template<typename... Ts> class SetFrequencyAction final : public Action<Ts...> {
  public:
   SetFrequencyAction(LEDCOutput *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(float, frequency);
diff --git a/esphome/components/libretiny/gpio_arduino.h b/esphome/components/libretiny/gpio_arduino.h
index 5f1fa3fec7..da477fde36 100644
--- a/esphome/components/libretiny/gpio_arduino.h
+++ b/esphome/components/libretiny/gpio_arduino.h
@@ -5,7 +5,7 @@
 
 namespace esphome::libretiny {
 
-class ArduinoInternalGPIOPin : public InternalGPIOPin {
+class ArduinoInternalGPIOPin final : public InternalGPIOPin {
  public:
   void set_pin(uint8_t pin) { pin_ = pin; }
   void set_inverted(bool inverted) { inverted_ = inverted; }
diff --git a/esphome/components/libretiny/lt_component.h b/esphome/components/libretiny/lt_component.h
index 896f1901e3..3850a679b2 100644
--- a/esphome/components/libretiny/lt_component.h
+++ b/esphome/components/libretiny/lt_component.h
@@ -14,7 +14,7 @@
 
 namespace esphome::libretiny {
 
-class LTComponent : public Component {
+class LTComponent final : public Component {
  public:
   float get_setup_priority() const override;
   void dump_config() override;
diff --git a/esphome/components/libretiny_pwm/libretiny_pwm.h b/esphome/components/libretiny_pwm/libretiny_pwm.h
index f7737be386..f0ea0228b7 100644
--- a/esphome/components/libretiny_pwm/libretiny_pwm.h
+++ b/esphome/components/libretiny_pwm/libretiny_pwm.h
@@ -9,7 +9,7 @@
 
 namespace esphome::libretiny_pwm {
 
-class LibreTinyPWM : public output::FloatOutput, public Component {
+class LibreTinyPWM final : public output::FloatOutput, public Component {
  public:
   explicit LibreTinyPWM(InternalGPIOPin *pin) : pin_(pin) {}
 
@@ -34,7 +34,7 @@ class LibreTinyPWM : public output::FloatOutput, public Component {
   bool initialized_ = false;
 };
 
-template<typename... Ts> class SetFrequencyAction : public Action<Ts...> {
+template<typename... Ts> class SetFrequencyAction final : public Action<Ts...> {
  public:
   SetFrequencyAction(LibreTinyPWM *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(float, frequency);
diff --git a/esphome/components/light/addressable_light.h b/esphome/components/light/addressable_light.h
index 0202ad380a..57e9caf289 100644
--- a/esphome/components/light/addressable_light.h
+++ b/esphome/components/light/addressable_light.h
@@ -21,7 +21,7 @@ Color color_from_light_color_values(LightColorValues val);
 
 /// Use a custom state class for addressable lights, to allow type system to discriminate between addressable and
 /// non-addressable lights.
-class AddressableLightState : public LightState {
+class AddressableLightState final : public LightState {
   using LightState::LightState;
 };
 
diff --git a/esphome/components/light/automation.h b/esphome/components/light/automation.h
index 260414f033..ced15dfc60 100644
--- a/esphome/components/light/automation.h
+++ b/esphome/components/light/automation.h
@@ -8,7 +8,7 @@ namespace esphome::light {
 
 enum class LimitMode { CLAMP, DO_NOTHING };
 
-template<bool HasTransitionLength, typename... Ts> class ToggleAction : public Action<Ts...> {
+template<bool HasTransitionLength, typename... Ts> class ToggleAction final : public Action<Ts...> {
  public:
   explicit ToggleAction(LightState *state) : state_(state) {}
 
@@ -43,7 +43,7 @@ template<bool HasTransitionLength, typename... Ts> class ToggleAction : public A
 // (e.g. `const T & &` if Ts already carries a reference, or `const const
 // T &` if Ts already carries a const). This keeps trigger args no-copy
 // regardless of whether the trigger supplies `T`, `T &`, or `const T &`.
-template<typename... Ts> class LightControlAction : public Action<Ts...> {
+template<typename... Ts> class LightControlAction final : public Action<Ts...> {
  public:
   using ApplyFn = void (*)(LightState *, LightCall &, const std::remove_cvref_t<Ts> &...);
   LightControlAction(LightState *parent, ApplyFn apply) : parent_(parent), apply_(apply) {}
@@ -59,7 +59,7 @@ template<typename... Ts> class LightControlAction : public Action<Ts...> {
   ApplyFn apply_;
 };
 
-template<bool HasTransitionLength, typename... Ts> class DimRelativeAction : public Action<Ts...> {
+template<bool HasTransitionLength, typename... Ts> class DimRelativeAction final : public Action<Ts...> {
  public:
   explicit DimRelativeAction(LightState *parent) : parent_(parent) {}
 
@@ -108,7 +108,7 @@ template<bool HasTransitionLength, typename... Ts> class DimRelativeAction : pub
 // at compile time so the chosen branch is the only one that gets instantiated
 // per action site. `include_none` is runtime so a single set of templates
 // covers both the "wrap through None" and "skip None" variants.
-template<bool Forward, typename... Ts> class LightEffectCycleAction : public Action<Ts...> {
+template<bool Forward, typename... Ts> class LightEffectCycleAction final : public Action<Ts...> {
  public:
   explicit LightEffectCycleAction(LightState *parent) : parent_(parent) {}
 
@@ -145,7 +145,7 @@ template<bool Forward, typename... Ts> class LightEffectCycleAction : public Act
   bool include_none_{false};
 };
 
-template<typename... Ts> class LightIsOnCondition : public Condition<Ts...> {
+template<typename... Ts> class LightIsOnCondition final : public Condition<Ts...> {
  public:
   explicit LightIsOnCondition(LightState *state) : state_(state) {}
   bool check(const Ts &...x) override { return this->state_->current_values.is_on(); }
@@ -153,7 +153,7 @@ template<typename... Ts> class LightIsOnCondition : public Condition<Ts...> {
  protected:
   LightState *state_;
 };
-template<typename... Ts> class LightIsOffCondition : public Condition<Ts...> {
+template<typename... Ts> class LightIsOffCondition final : public Condition<Ts...> {
  public:
   explicit LightIsOffCondition(LightState *state) : state_(state) {}
   bool check(const Ts &...x) override { return !this->state_->current_values.is_on(); }
@@ -162,7 +162,7 @@ template<typename... Ts> class LightIsOffCondition : public Condition<Ts...> {
   LightState *state_;
 };
 
-class LightTurnOnTrigger : public Trigger<>, public LightRemoteValuesListener {
+class LightTurnOnTrigger final : public Trigger<>, public LightRemoteValuesListener {
  public:
   explicit LightTurnOnTrigger(LightState *a_light) : light_(a_light) {
     a_light->add_remote_values_listener(this);
@@ -187,7 +187,7 @@ class LightTurnOnTrigger : public Trigger<>, public LightRemoteValuesListener {
   bool last_on_;
 };
 
-class LightTurnOffTrigger : public Trigger<>, public LightTargetStateReachedListener {
+class LightTurnOffTrigger final : public Trigger<>, public LightTargetStateReachedListener {
  public:
   explicit LightTurnOffTrigger(LightState *a_light) : light_(a_light) {
     a_light->add_target_state_reached_listener(this);
@@ -205,7 +205,7 @@ class LightTurnOffTrigger : public Trigger<>, public LightTargetStateReachedList
   LightState *light_;
 };
 
-class LightStateTrigger : public Trigger<>, public LightRemoteValuesListener {
+class LightStateTrigger final : public Trigger<>, public LightRemoteValuesListener {
  public:
   explicit LightStateTrigger(LightState *a_light) { a_light->add_remote_values_listener(this); }
 
@@ -216,7 +216,7 @@ class LightStateTrigger : public Trigger<>, public LightRemoteValuesListener {
 // due to the template. It's just a temporary warning anyway.
 void addressableset_warn_about_scale(const char *field);
 
-template<typename... Ts> class AddressableSet : public Action<Ts...> {
+template<typename... Ts> class AddressableSet final : public Action<Ts...> {
  public:
   explicit AddressableSet(LightState *parent) : parent_(parent) {}
 
diff --git a/esphome/components/lightwaverf/lightwaverf.h b/esphome/components/lightwaverf/lightwaverf.h
index 224da6315f..36dac3c86f 100644
--- a/esphome/components/lightwaverf/lightwaverf.h
+++ b/esphome/components/lightwaverf/lightwaverf.h
@@ -15,7 +15,7 @@ namespace esphome::lightwaverf {
 
 #ifdef USE_ESP8266
 
-class LightWaveRF : public PollingComponent {
+class LightWaveRF final : public PollingComponent {
  public:
   void set_pin(InternalGPIOPin *pin_tx, InternalGPIOPin *pin_rx) {
     pin_tx_ = pin_tx;
@@ -37,7 +37,7 @@ class LightWaveRF : public PollingComponent {
   LwTx lwtx_;
 };
 
-template<typename... Ts> class SendRawAction : public Action<Ts...> {
+template<typename... Ts> class SendRawAction final : public Action<Ts...> {
  public:
   SendRawAction(LightWaveRF *parent) : parent_(parent){};
   TEMPLATABLE_VALUE(int, repeat);
diff --git a/esphome/components/lilygo_t5_47/touchscreen/lilygo_t5_47_touchscreen.h b/esphome/components/lilygo_t5_47/touchscreen/lilygo_t5_47_touchscreen.h
index 8b345515ab..ad82e6c3a0 100644
--- a/esphome/components/lilygo_t5_47/touchscreen/lilygo_t5_47_touchscreen.h
+++ b/esphome/components/lilygo_t5_47/touchscreen/lilygo_t5_47_touchscreen.h
@@ -12,7 +12,7 @@ namespace esphome::lilygo_t5_47 {
 
 using namespace touchscreen;
 
-class LilygoT547Touchscreen : public Touchscreen, public i2c::I2CDevice {
+class LilygoT547Touchscreen final : public Touchscreen, public i2c::I2CDevice {
  public:
   void setup() override;
 
diff --git a/esphome/components/lm75b/lm75b.h b/esphome/components/lm75b/lm75b.h
index eaf1b46550..3d5b97ae5b 100644
--- a/esphome/components/lm75b/lm75b.h
+++ b/esphome/components/lm75b/lm75b.h
@@ -8,7 +8,7 @@ namespace esphome::lm75b {
 
 static const uint8_t LM75B_REG_TEMPERATURE = 0x00;
 
-class LM75BComponent : public PollingComponent, public i2c::I2CDevice, public sensor::Sensor {
+class LM75BComponent final : public PollingComponent, public i2c::I2CDevice, public sensor::Sensor {
  public:
   void dump_config() override;
   void update() override;
diff --git a/esphome/components/lock/automation.h b/esphome/components/lock/automation.h
index c140bc568f..ec6ead79f3 100644
--- a/esphome/components/lock/automation.h
+++ b/esphome/components/lock/automation.h
@@ -6,7 +6,7 @@
 
 namespace esphome::lock {
 
-template<typename... Ts> class LockAction : public Action<Ts...> {
+template<typename... Ts> class LockAction final : public Action<Ts...> {
  public:
   explicit LockAction(Lock *a_lock) : lock_(a_lock) {}
 
@@ -16,7 +16,7 @@ template<typename... Ts> class LockAction : public Action<Ts...> {
   Lock *lock_;
 };
 
-template<typename... Ts> class UnlockAction : public Action<Ts...> {
+template<typename... Ts> class UnlockAction final : public Action<Ts...> {
  public:
   explicit UnlockAction(Lock *a_lock) : lock_(a_lock) {}
 
@@ -26,7 +26,7 @@ template<typename... Ts> class UnlockAction : public Action<Ts...> {
   Lock *lock_;
 };
 
-template<typename... Ts> class OpenAction : public Action<Ts...> {
+template<typename... Ts> class OpenAction final : public Action<Ts...> {
  public:
   explicit OpenAction(Lock *a_lock) : lock_(a_lock) {}
 
@@ -36,7 +36,7 @@ template<typename... Ts> class OpenAction : public Action<Ts...> {
   Lock *lock_;
 };
 
-template<typename... Ts> class LockCondition : public Condition<Ts...> {
+template<typename... Ts> class LockCondition final : public Condition<Ts...> {
  public:
   LockCondition(Lock *parent, bool state) : parent_(parent), state_(state) {}
   bool check(const Ts &...x) override {
diff --git a/esphome/components/lps22/lps22.h b/esphome/components/lps22/lps22.h
index c6746f2343..020c14296c 100644
--- a/esphome/components/lps22/lps22.h
+++ b/esphome/components/lps22/lps22.h
@@ -6,7 +6,7 @@
 
 namespace esphome::lps22 {
 
-class LPS22Component : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
+class LPS22Component final : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
  public:
   void set_temperature_sensor(sensor::Sensor *temperature_sensor) { this->temperature_sensor_ = temperature_sensor; }
   void set_pressure_sensor(sensor::Sensor *pressure_sensor) { this->pressure_sensor_ = pressure_sensor; }
diff --git a/esphome/components/lsm6ds/lsm6ds.h b/esphome/components/lsm6ds/lsm6ds.h
index 75462ff1fb..47d6f55939 100644
--- a/esphome/components/lsm6ds/lsm6ds.h
+++ b/esphome/components/lsm6ds/lsm6ds.h
@@ -82,7 +82,7 @@ enum LSM6DSGyroODR : uint8_t {
 };
 
 // ── Main component class ─────────────────────────────────────────────────────
-class LSM6DSComponent : public motion::MotionComponent, public i2c::I2CDevice {
+class LSM6DSComponent final : public motion::MotionComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/ltr390/ltr390.h b/esphome/components/ltr390/ltr390.h
index 1ead84b4a8..1e3b6494bb 100644
--- a/esphome/components/ltr390/ltr390.h
+++ b/esphome/components/ltr390/ltr390.h
@@ -39,7 +39,7 @@ enum LTR390RESOLUTION {
   LTR390_RESOLUTION_13BIT,
 };
 
-class LTR390Component : public PollingComponent, public i2c::I2CDevice {
+class LTR390Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/ltr501/ltr501.h b/esphome/components/ltr501/ltr501.h
index c7eccbeea9..d1f7648d4c 100644
--- a/esphome/components/ltr501/ltr501.h
+++ b/esphome/components/ltr501/ltr501.h
@@ -19,7 +19,7 @@ enum LtrType : uint8_t {
   LTR_TYPE_ALS_AND_PS = 3,
 };
 
-class LTRAlsPs501Component : public PollingComponent, public i2c::I2CDevice {
+class LTRAlsPs501Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   //
   // EspHome framework functions
diff --git a/esphome/components/lvgl/light/lvgl_light.h b/esphome/components/lvgl/light/lvgl_light.h
index bf019964c7..37dc4135ce 100644
--- a/esphome/components/lvgl/light/lvgl_light.h
+++ b/esphome/components/lvgl/light/lvgl_light.h
@@ -6,7 +6,7 @@
 
 namespace esphome::lvgl {
 
-class LVLight : public light::LightOutput {
+class LVLight final : public light::LightOutput {
  public:
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
diff --git a/esphome/components/lvgl/lvgl_esphome.h b/esphome/components/lvgl/lvgl_esphome.h
index 3f7f1dce14..8840b0ad30 100644
--- a/esphome/components/lvgl/lvgl_esphome.h
+++ b/esphome/components/lvgl/lvgl_esphome.h
@@ -155,7 +155,7 @@ class LvPageType : public Parented<LvglComponent> {
 
 using event_callback_t = void(lv_event_t *);
 
-class LvLambdaComponent : public Component {
+class LvLambdaComponent final : public Component {
  public:
   LvLambdaComponent(void (*callback)()) : callback_(callback) {}
 
@@ -167,7 +167,7 @@ class LvLambdaComponent : public Component {
   void (*callback_)();
 };
 
-template<typename... Ts> class ObjUpdateAction : public Action<Ts...> {
+template<typename... Ts> class ObjUpdateAction final : public Action<Ts...> {
  public:
   explicit ObjUpdateAction(std::function<void(Ts...)> &&lamb) : lamb_(std::move(lamb)) {}
 
@@ -185,7 +185,7 @@ enum RotationType : uint8_t {
   ROTATION_HARDWARE,
 };
 
-class LvglComponent : public PollingComponent {
+class LvglComponent final : public PollingComponent {
   constexpr static const char *const TAG = "lvgl";
 
  public:
@@ -339,7 +339,7 @@ class LvglComponent : public PollingComponent {
 #endif
 };
 
-class IdleTrigger : public Trigger<> {
+class IdleTrigger final : public Trigger<> {
  public:
   explicit IdleTrigger(LvglComponent *parent, TemplatableFn<uint32_t> timeout);
 
@@ -348,7 +348,7 @@ class IdleTrigger : public Trigger<> {
   bool is_idle_{};
 };
 
-template<typename... Ts> class LvglAction : public Action<Ts...>, public Parented<LvglComponent> {
+template<typename... Ts> class LvglAction final : public Action<Ts...>, public Parented<LvglComponent> {
  public:
   explicit LvglAction(std::function<void(LvglComponent *)> &&lamb) : action_(std::move(lamb)) {}
 
@@ -357,7 +357,7 @@ template<typename... Ts> class LvglAction : public Action<Ts...>, public Parente
   std::function<void(LvglComponent *)> action_{};
 };
 
-template<typename Tc, typename... Ts> class LvglCondition : public Condition<Ts...>, public Parented<Tc> {
+template<typename Tc, typename... Ts> class LvglCondition final : public Condition<Ts...>, public Parented<Tc> {
  public:
   LvglCondition(std::function<bool(Tc *)> &&condition_lambda) : condition_lambda_(std::move(condition_lambda)) {}
   bool check(const Ts &...x) override { return this->condition_lambda_(this->parent_); }
@@ -367,7 +367,7 @@ template<typename Tc, typename... Ts> class LvglCondition : public Condition<Ts.
 };
 
 #ifdef USE_LVGL_TOUCHSCREEN
-class LVTouchListener : public touchscreen::TouchListener, public Parented<LvglComponent> {
+class LVTouchListener final : public touchscreen::TouchListener, public Parented<LvglComponent> {
  public:
   LVTouchListener(uint16_t long_press_time, uint16_t long_press_repeat_time, LvglComponent *parent);
   void update(const touchscreen::TouchPoints_t &tpoints) override;
@@ -403,7 +403,7 @@ class IndicatorLine : public LvCompound {
 #endif
 
 #ifdef USE_LVGL_KEY_LISTENER
-class LVEncoderListener : public Parented<LvglComponent> {
+class LVEncoderListener final : public Parented<LvglComponent> {
  public:
   LVEncoderListener(lv_indev_type_t type, uint16_t long_press_time, uint16_t long_press_repeat_time);
 
diff --git a/esphome/components/lvgl/number/lvgl_number.h b/esphome/components/lvgl/number/lvgl_number.h
index 3fda9427c5..eb2f70b4da 100644
--- a/esphome/components/lvgl/number/lvgl_number.h
+++ b/esphome/components/lvgl/number/lvgl_number.h
@@ -8,7 +8,7 @@
 
 namespace esphome::lvgl {
 
-class LVGLNumber : public number::Number, public Component {
+class LVGLNumber final : public number::Number, public Component {
  public:
   LVGLNumber(std::function<void(float)> control_lambda, std::function<float()> value_lambda, bool restore)
       : control_lambda_(std::move(control_lambda)), value_lambda_(std::move(value_lambda)), restore_(restore) {}
diff --git a/esphome/components/lvgl/select/lvgl_select.h b/esphome/components/lvgl/select/lvgl_select.h
index ffbe29d701..e36357328c 100644
--- a/esphome/components/lvgl/select/lvgl_select.h
+++ b/esphome/components/lvgl/select/lvgl_select.h
@@ -10,7 +10,7 @@
 
 namespace esphome::lvgl {
 
-class LVGLSelect : public select::Select, public Component {
+class LVGLSelect final : public select::Select, public Component {
  public:
   LVGLSelect(LvSelectable *widget, lv_anim_enable_t anim, bool restore)
       : widget_(widget), anim_(anim), restore_(restore) {}
diff --git a/esphome/components/lvgl/switch/lvgl_switch.h b/esphome/components/lvgl/switch/lvgl_switch.h
index 8f5502a7d5..ea15767ba8 100644
--- a/esphome/components/lvgl/switch/lvgl_switch.h
+++ b/esphome/components/lvgl/switch/lvgl_switch.h
@@ -9,7 +9,7 @@
 
 namespace esphome::lvgl {
 
-class LVGLSwitch : public switch_::Switch, public Component {
+class LVGLSwitch final : public switch_::Switch, public Component {
  public:
   LVGLSwitch(std::function<void(bool)> state_lambda) : state_lambda_(std::move(state_lambda)) {}
 
diff --git a/esphome/components/lvgl/text/lvgl_text.h b/esphome/components/lvgl/text/lvgl_text.h
index fead48d6fe..8d83f323ab 100644
--- a/esphome/components/lvgl/text/lvgl_text.h
+++ b/esphome/components/lvgl/text/lvgl_text.h
@@ -6,7 +6,7 @@
 
 namespace esphome::lvgl {
 
-class LVGLText : public text::Text {
+class LVGLText final : public text::Text {
  public:
   void set_control_lambda(const std::function<void(std::string)> &control_lambda) {
     this->control_lambda_ = control_lambda;
diff --git a/esphome/components/m5stack_8angle/binary_sensor/m5stack_8angle_binary_sensor.h b/esphome/components/m5stack_8angle/binary_sensor/m5stack_8angle_binary_sensor.h
index 14400bcea1..a49f6dbb54 100644
--- a/esphome/components/m5stack_8angle/binary_sensor/m5stack_8angle_binary_sensor.h
+++ b/esphome/components/m5stack_8angle/binary_sensor/m5stack_8angle_binary_sensor.h
@@ -7,9 +7,9 @@
 
 namespace esphome::m5stack_8angle {
 
-class M5Stack8AngleSwitchBinarySensor : public binary_sensor::BinarySensor,
-                                        public PollingComponent,
-                                        public Parented<M5Stack8AngleComponent> {
+class M5Stack8AngleSwitchBinarySensor final : public binary_sensor::BinarySensor,
+                                              public PollingComponent,
+                                              public Parented<M5Stack8AngleComponent> {
  public:
   void update() override;
 };
diff --git a/esphome/components/m5stack_8angle/light/m5stack_8angle_light.h b/esphome/components/m5stack_8angle/light/m5stack_8angle_light.h
index 0a5a50f2a8..ee204c239b 100644
--- a/esphome/components/m5stack_8angle/light/m5stack_8angle_light.h
+++ b/esphome/components/m5stack_8angle/light/m5stack_8angle_light.h
@@ -10,7 +10,7 @@ namespace esphome::m5stack_8angle {
 static const uint8_t M5STACK_8ANGLE_NUM_LEDS = 9;
 static const uint8_t M5STACK_8ANGLE_BYTES_PER_LED = 4;
 
-class M5Stack8AngleLightOutput : public light::AddressableLight, public Parented<M5Stack8AngleComponent> {
+class M5Stack8AngleLightOutput final : public light::AddressableLight, public Parented<M5Stack8AngleComponent> {
  public:
   void setup() override;
 
diff --git a/esphome/components/m5stack_8angle/m5stack_8angle.h b/esphome/components/m5stack_8angle/m5stack_8angle.h
index ab2e232204..058949cad5 100644
--- a/esphome/components/m5stack_8angle/m5stack_8angle.h
+++ b/esphome/components/m5stack_8angle/m5stack_8angle.h
@@ -16,7 +16,7 @@ enum AnalogBits : uint8_t {
   BITS_12 = 12,
 };
 
-class M5Stack8AngleComponent : public i2c::I2CDevice, public Component {
+class M5Stack8AngleComponent final : public i2c::I2CDevice, public Component {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/m5stack_8angle/sensor/m5stack_8angle_sensor.h b/esphome/components/m5stack_8angle/sensor/m5stack_8angle_sensor.h
index 418503d7c8..a270661ad6 100644
--- a/esphome/components/m5stack_8angle/sensor/m5stack_8angle_sensor.h
+++ b/esphome/components/m5stack_8angle/sensor/m5stack_8angle_sensor.h
@@ -7,9 +7,9 @@
 
 namespace esphome::m5stack_8angle {
 
-class M5Stack8AngleKnobSensor : public sensor::Sensor,
-                                public PollingComponent,
-                                public Parented<M5Stack8AngleComponent> {
+class M5Stack8AngleKnobSensor final : public sensor::Sensor,
+                                      public PollingComponent,
+                                      public Parented<M5Stack8AngleComponent> {
  public:
   void update() override;
   void set_channel(uint8_t channel) { this->channel_ = channel; };