diff --git a/esphome/components/rc522_i2c/rc522_i2c.h b/esphome/components/rc522_i2c/rc522_i2c.h
index bd6f2269d8..9144241fe7 100644
--- a/esphome/components/rc522_i2c/rc522_i2c.h
+++ b/esphome/components/rc522_i2c/rc522_i2c.h
@@ -6,7 +6,7 @@
 
 namespace esphome::rc522_i2c {
 
-class RC522I2C : public rc522::RC522, public i2c::I2CDevice {
+class RC522I2C final : public rc522::RC522, public i2c::I2CDevice {
  public:
   void dump_config() override;
 
diff --git a/esphome/components/rc522_spi/rc522_spi.h b/esphome/components/rc522_spi/rc522_spi.h
index 54caf5c117..2809718308 100644
--- a/esphome/components/rc522_spi/rc522_spi.h
+++ b/esphome/components/rc522_spi/rc522_spi.h
@@ -14,9 +14,9 @@
  */
 namespace esphome::rc522_spi {
 
-class RC522Spi : public rc522::RC522,
-                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
-                                       spi::DATA_RATE_4MHZ> {
+class RC522Spi final : public rc522::RC522,
+                       public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                             spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_4MHZ> {
  public:
   void setup() override;
 
diff --git a/esphome/components/rd03d/rd03d.h b/esphome/components/rd03d/rd03d.h
index 8bf7b423be..e4ec6aafb2 100644
--- a/esphome/components/rd03d/rd03d.h
+++ b/esphome/components/rd03d/rd03d.h
@@ -37,7 +37,7 @@ struct TargetSensor {
 };
 #endif
 
-class RD03DComponent : public Component, public uart::UARTDevice {
+class RD03DComponent final : public Component, public uart::UARTDevice {
  public:
   void setup() override;
   void loop() override;
diff --git a/esphome/components/rdm6300/rdm6300.h b/esphome/components/rdm6300/rdm6300.h
index f088f7de4c..4aa31b8d60 100644
--- a/esphome/components/rdm6300/rdm6300.h
+++ b/esphome/components/rdm6300/rdm6300.h
@@ -13,7 +13,7 @@ namespace esphome::rdm6300 {
 class RDM6300BinarySensor;
 class RDM6300Trigger;
 
-class RDM6300Component : public Component, public uart::UARTDevice {
+class RDM6300Component final : public Component, public uart::UARTDevice {
  public:
   void loop() override;
 
@@ -28,7 +28,7 @@ class RDM6300Component : public Component, public uart::UARTDevice {
   uint32_t last_id_{0};
 };
 
-class RDM6300BinarySensor : public binary_sensor::BinarySensorInitiallyOff {
+class RDM6300BinarySensor final : public binary_sensor::BinarySensorInitiallyOff {
  public:
   void set_id(uint32_t id) { id_ = id; }
 
@@ -46,7 +46,7 @@ class RDM6300BinarySensor : public binary_sensor::BinarySensorInitiallyOff {
   uint32_t id_;
 };
 
-class RDM6300Trigger : public Trigger<uint32_t> {
+class RDM6300Trigger final : public Trigger<uint32_t> {
  public:
   void process(uint32_t uid) { this->trigger(uid); }
 };
diff --git a/esphome/components/remote_base/raw_protocol.h b/esphome/components/remote_base/raw_protocol.h
index 1bcf390b62..f043d95eb4 100644
--- a/esphome/components/remote_base/raw_protocol.h
+++ b/esphome/components/remote_base/raw_protocol.h
@@ -31,7 +31,7 @@ class RawBinarySensor : public RemoteReceiverBinarySensorBase {
   size_t len_;
 };
 
-class RawTrigger : public Trigger<RawTimings>, public Component, public RemoteReceiverListener {
+class RawTrigger final : public Trigger<RawTimings>, public Component, public RemoteReceiverListener {
  protected:
   bool on_receive(RemoteReceiveData src) override {
     this->trigger(src.get_raw_data());
diff --git a/esphome/components/remote_base/remote_base.h b/esphome/components/remote_base/remote_base.h
index 0b1109267f..4e2ed4b71c 100644
--- a/esphome/components/remote_base/remote_base.h
+++ b/esphome/components/remote_base/remote_base.h
@@ -256,7 +256,7 @@ template<typename T> class RemoteReceiverBinarySensor : public RemoteReceiverBin
 };
 
 template<typename T>
-class RemoteReceiverTrigger : public Trigger<typename T::ProtocolData>, public RemoteReceiverListener {
+class RemoteReceiverTrigger final : public Trigger<typename T::ProtocolData>, public RemoteReceiverListener {
  protected:
   bool on_receive(RemoteReceiveData src) override {
     auto proto = T();
diff --git a/esphome/components/remote_receiver/remote_receiver.h b/esphome/components/remote_receiver/remote_receiver.h
index cc707346eb..2ed6a4c251 100644
--- a/esphome/components/remote_receiver/remote_receiver.h
+++ b/esphome/components/remote_receiver/remote_receiver.h
@@ -55,11 +55,11 @@ struct RemoteReceiverComponentStore {
 };
 #endif
 
-class RemoteReceiverComponent : public remote_base::RemoteReceiverBase,
-                                public Component
+class RemoteReceiverComponent final : public remote_base::RemoteReceiverBase,
+                                      public Component
 #if defined(USE_ESP32) && SOC_RMT_SUPPORTED
     ,
-                                public remote_base::RemoteRMTChannel
+                                      public remote_base::RemoteRMTChannel
 #endif
 
 {
diff --git a/esphome/components/remote_transmitter/automation.h b/esphome/components/remote_transmitter/automation.h
index 8da4cfd95d..a1b0926451 100644
--- a/esphome/components/remote_transmitter/automation.h
+++ b/esphome/components/remote_transmitter/automation.h
@@ -7,7 +7,8 @@
 
 namespace esphome::remote_transmitter {
 
-template<typename... Ts> class DigitalWriteAction : public Action<Ts...>, public Parented<RemoteTransmitterComponent> {
+template<typename... Ts>
+class DigitalWriteAction final : public Action<Ts...>, public Parented<RemoteTransmitterComponent> {
  public:
   TEMPLATABLE_VALUE(bool, value)
   void play(const Ts &...x) override { this->parent_->digital_write(this->value_.value(x...)); }
diff --git a/esphome/components/remote_transmitter/remote_transmitter.h b/esphome/components/remote_transmitter/remote_transmitter.h
index d30966e3da..bcb07038ea 100644
--- a/esphome/components/remote_transmitter/remote_transmitter.h
+++ b/esphome/components/remote_transmitter/remote_transmitter.h
@@ -33,11 +33,11 @@ struct RemoteTransmitterComponentStore {
 #endif
 #endif
 
-class RemoteTransmitterComponent : public remote_base::RemoteTransmitterBase,
-                                   public Component
+class RemoteTransmitterComponent final : public remote_base::RemoteTransmitterBase,
+                                         public Component
 #if defined(USE_ESP32) && SOC_RMT_SUPPORTED
     ,
-                                   public remote_base::RemoteRMTChannel
+                                         public remote_base::RemoteRMTChannel
 #endif
 {
  public:
diff --git a/esphome/components/resampler/speaker/resampler_speaker.h b/esphome/components/resampler/speaker/resampler_speaker.h
index 4a091e298a..768f6b0572 100644
--- a/esphome/components/resampler/speaker/resampler_speaker.h
+++ b/esphome/components/resampler/speaker/resampler_speaker.h
@@ -14,7 +14,7 @@
 
 namespace esphome::resampler {
 
-class ResamplerSpeaker : public Component, public speaker::Speaker {
+class ResamplerSpeaker final : public Component, public speaker::Speaker {
  public:
   float get_setup_priority() const override { return esphome::setup_priority::DATA; }
   void dump_config() override;
diff --git a/esphome/components/resistance/resistance_sensor.h b/esphome/components/resistance/resistance_sensor.h
index b646fb509a..ecb77795ff 100644
--- a/esphome/components/resistance/resistance_sensor.h
+++ b/esphome/components/resistance/resistance_sensor.h
@@ -10,7 +10,7 @@ enum ResistanceConfiguration {
   DOWNSTREAM,
 };
 
-class ResistanceSensor : public Component, public sensor::Sensor {
+class ResistanceSensor final : public Component, public sensor::Sensor {
  public:
   void set_sensor(Sensor *sensor) { sensor_ = sensor; }
   void set_configuration(ResistanceConfiguration configuration) { configuration_ = configuration; }
diff --git a/esphome/components/restart/switch/restart_switch.h b/esphome/components/restart/switch/restart_switch.h
index 67b4a2bfd1..dc9ec8eadc 100644
--- a/esphome/components/restart/switch/restart_switch.h
+++ b/esphome/components/restart/switch/restart_switch.h
@@ -5,7 +5,7 @@
 
 namespace esphome::restart {
 
-class RestartSwitch : public switch_::Switch, public Component {
+class RestartSwitch final : public switch_::Switch, public Component {
  public:
   void dump_config() override;
 
diff --git a/esphome/components/rf_bridge/rf_bridge.h b/esphome/components/rf_bridge/rf_bridge.h
index 2f91459076..5ad75650ab 100644
--- a/esphome/components/rf_bridge/rf_bridge.h
+++ b/esphome/components/rf_bridge/rf_bridge.h
@@ -44,7 +44,7 @@ struct RFBridgeAdvancedData {
   std::string code;
 };
 
-class RFBridgeComponent : public uart::UARTDevice, public Component {
+class RFBridgeComponent final : public uart::UARTDevice, public Component {
  public:
   void loop() override;
   void dump_config() override;
@@ -76,7 +76,7 @@ class RFBridgeComponent : public uart::UARTDevice, public Component {
   CallbackManager<void(RFBridgeAdvancedData)> advanced_data_callback_;
 };
 
-template<typename... Ts> class RFBridgeSendCodeAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeSendCodeAction final : public Action<Ts...> {
  public:
   RFBridgeSendCodeAction(RFBridgeComponent *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(uint16_t, sync)
@@ -97,7 +97,7 @@ template<typename... Ts> class RFBridgeSendCodeAction : public Action<Ts...> {
   RFBridgeComponent *parent_;
 };
 
-template<typename... Ts> class RFBridgeSendAdvancedCodeAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeSendAdvancedCodeAction final : public Action<Ts...> {
  public:
   RFBridgeSendAdvancedCodeAction(RFBridgeComponent *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(uint8_t, length)
@@ -116,7 +116,7 @@ template<typename... Ts> class RFBridgeSendAdvancedCodeAction : public Action<Ts
   RFBridgeComponent *parent_;
 };
 
-template<typename... Ts> class RFBridgeLearnAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeLearnAction final : public Action<Ts...> {
  public:
   RFBridgeLearnAction(RFBridgeComponent *parent) : parent_(parent) {}
 
@@ -126,7 +126,7 @@ template<typename... Ts> class RFBridgeLearnAction : public Action<Ts...> {
   RFBridgeComponent *parent_;
 };
 
-template<typename... Ts> class RFBridgeStartAdvancedSniffingAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeStartAdvancedSniffingAction final : public Action<Ts...> {
  public:
   RFBridgeStartAdvancedSniffingAction(RFBridgeComponent *parent) : parent_(parent) {}
 
@@ -136,7 +136,7 @@ template<typename... Ts> class RFBridgeStartAdvancedSniffingAction : public Acti
   RFBridgeComponent *parent_;
 };
 
-template<typename... Ts> class RFBridgeStopAdvancedSniffingAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeStopAdvancedSniffingAction final : public Action<Ts...> {
  public:
   RFBridgeStopAdvancedSniffingAction(RFBridgeComponent *parent) : parent_(parent) {}
 
@@ -146,7 +146,7 @@ template<typename... Ts> class RFBridgeStopAdvancedSniffingAction : public Actio
   RFBridgeComponent *parent_;
 };
 
-template<typename... Ts> class RFBridgeStartBucketSniffingAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeStartBucketSniffingAction final : public Action<Ts...> {
  public:
   RFBridgeStartBucketSniffingAction(RFBridgeComponent *parent) : parent_(parent) {}
 
@@ -156,7 +156,7 @@ template<typename... Ts> class RFBridgeStartBucketSniffingAction : public Action
   RFBridgeComponent *parent_;
 };
 
-template<typename... Ts> class RFBridgeSendRawAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeSendRawAction final : public Action<Ts...> {
  public:
   RFBridgeSendRawAction(RFBridgeComponent *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(std::string, raw)
@@ -167,7 +167,7 @@ template<typename... Ts> class RFBridgeSendRawAction : public Action<Ts...> {
   RFBridgeComponent *parent_;
 };
 
-template<typename... Ts> class RFBridgeBeepAction : public Action<Ts...> {
+template<typename... Ts> class RFBridgeBeepAction final : public Action<Ts...> {
  public:
   RFBridgeBeepAction(RFBridgeComponent *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(uint16_t, duration)
diff --git a/esphome/components/rgb/rgb_light_output.h b/esphome/components/rgb/rgb_light_output.h
index f0d599cf57..5893abf1d7 100644
--- a/esphome/components/rgb/rgb_light_output.h
+++ b/esphome/components/rgb/rgb_light_output.h
@@ -6,7 +6,7 @@
 
 namespace esphome::rgb {
 
-class RGBLightOutput : public light::LightOutput {
+class RGBLightOutput final : public light::LightOutput {
  public:
   void set_red(output::FloatOutput *red) { red_ = red; }
   void set_green(output::FloatOutput *green) { green_ = green; }
diff --git a/esphome/components/rgbct/rgbct_light_output.h b/esphome/components/rgbct/rgbct_light_output.h
index 84ecb232cc..d6f7aaef78 100644
--- a/esphome/components/rgbct/rgbct_light_output.h
+++ b/esphome/components/rgbct/rgbct_light_output.h
@@ -7,7 +7,7 @@
 
 namespace esphome::rgbct {
 
-class RGBCTLightOutput : public light::LightOutput {
+class RGBCTLightOutput final : public light::LightOutput {
  public:
   void set_red(output::FloatOutput *red) { red_ = red; }
   void set_green(output::FloatOutput *green) { green_ = green; }
diff --git a/esphome/components/rgbw/rgbw_light_output.h b/esphome/components/rgbw/rgbw_light_output.h
index ae96eb2024..a957104457 100644
--- a/esphome/components/rgbw/rgbw_light_output.h
+++ b/esphome/components/rgbw/rgbw_light_output.h
@@ -6,7 +6,7 @@
 
 namespace esphome::rgbw {
 
-class RGBWLightOutput : public light::LightOutput {
+class RGBWLightOutput final : public light::LightOutput {
  public:
   void set_red(output::FloatOutput *red) { red_ = red; }
   void set_green(output::FloatOutput *green) { green_ = green; }
diff --git a/esphome/components/rgbww/rgbww_light_output.h b/esphome/components/rgbww/rgbww_light_output.h
index de5ee993f8..6608c65d9c 100644
--- a/esphome/components/rgbww/rgbww_light_output.h
+++ b/esphome/components/rgbww/rgbww_light_output.h
@@ -6,7 +6,7 @@
 
 namespace esphome::rgbww {
 
-class RGBWWLightOutput : public light::LightOutput {
+class RGBWWLightOutput final : public light::LightOutput {
  public:
   void set_red(output::FloatOutput *red) { red_ = red; }
   void set_green(output::FloatOutput *green) { green_ = green; }
diff --git a/esphome/components/rotary_encoder/rotary_encoder.h b/esphome/components/rotary_encoder/rotary_encoder.h
index 8a56da4fe2..286267baed 100644
--- a/esphome/components/rotary_encoder/rotary_encoder.h
+++ b/esphome/components/rotary_encoder/rotary_encoder.h
@@ -41,7 +41,7 @@ struct RotaryEncoderSensorStore {
   static void gpio_intr(RotaryEncoderSensorStore *arg);
 };
 
-class RotaryEncoderSensor : public sensor::Sensor, public Component {
+class RotaryEncoderSensor final : public sensor::Sensor, public Component {
  public:
   void set_pin_a(InternalGPIOPin *pin_a) { pin_a_ = pin_a; }
   void set_pin_b(InternalGPIOPin *pin_b) { pin_b_ = pin_b; }
@@ -106,7 +106,7 @@ class RotaryEncoderSensor : public sensor::Sensor, public Component {
   CallbackManager<void(int32_t)> listeners_{};
 };
 
-template<typename... Ts> class RotaryEncoderSetValueAction : public Action<Ts...> {
+template<typename... Ts> class RotaryEncoderSetValueAction final : public Action<Ts...> {
  public:
   RotaryEncoderSetValueAction(RotaryEncoderSensor *encoder) : encoder_(encoder) {}
   TEMPLATABLE_VALUE(int, value)
diff --git a/esphome/components/router/speaker/router_speaker.h b/esphome/components/router/speaker/router_speaker.h
index 13b58a1c72..801d0906ce 100644
--- a/esphome/components/router/speaker/router_speaker.h
+++ b/esphome/components/router/speaker/router_speaker.h
@@ -13,7 +13,7 @@
 
 namespace esphome::router {
 
-class Router : public Component, public speaker::Speaker {
+class Router final : public Component, public speaker::Speaker {
  public:
   float get_setup_priority() const override { return setup_priority::DATA; }
 
@@ -77,7 +77,7 @@ class Router : public Component, public speaker::Speaker {
   std::atomic<int8_t> active_output_idx_{0};
 };
 
-template<typename... Ts> class SwitchOutputAction : public Action<Ts...> {
+template<typename... Ts> class SwitchOutputAction final : public Action<Ts...> {
  public:
   explicit SwitchOutputAction(Router *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(speaker::Speaker *, target)
diff --git a/esphome/components/rp2040/gpio.h b/esphome/components/rp2040/gpio.h
index da97cff9b1..b9aa497b47 100644
--- a/esphome/components/rp2040/gpio.h
+++ b/esphome/components/rp2040/gpio.h
@@ -7,7 +7,7 @@
 
 namespace esphome::rp2040 {
 
-class RP2040GPIOPin : public InternalGPIOPin {
+class RP2040GPIOPin final : public InternalGPIOPin {
  public:
   void set_pin(uint8_t pin) { pin_ = pin; }
   void set_inverted(bool inverted) { inverted_ = inverted; }
diff --git a/esphome/components/rp2040_ble/rp2040_ble.h b/esphome/components/rp2040_ble/rp2040_ble.h
index 24b3860cc1..885e49f690 100644
--- a/esphome/components/rp2040_ble/rp2040_ble.h
+++ b/esphome/components/rp2040_ble/rp2040_ble.h
@@ -18,7 +18,7 @@ enum class BLEComponentState : uint8_t {
   DISABLED,
 };
 
-class RP2040BLE : public Component {
+class RP2040BLE final : public Component {
  public:
   void setup() override;
   void loop() override;
diff --git a/esphome/components/rp2040_pio_led_strip/led_strip.h b/esphome/components/rp2040_pio_led_strip/led_strip.h
index ebc3bbbaa5..aaa5b0842d 100644
--- a/esphome/components/rp2040_pio_led_strip/led_strip.h
+++ b/esphome/components/rp2040_pio_led_strip/led_strip.h
@@ -57,7 +57,7 @@ inline const char *rgb_order_to_string(RGBOrder order) {
 
 using init_fn = void (*)(PIO pio, uint sm, uint offset, uint pin, float freq);
 
-class RP2040PIOLEDStripLightOutput : public light::AddressableLight {
+class RP2040PIOLEDStripLightOutput final : public light::AddressableLight {
  public:
   void setup() override;
   void write_state(light::LightState *state) override;
diff --git a/esphome/components/rp2040_pwm/rp2040_pwm.h b/esphome/components/rp2040_pwm/rp2040_pwm.h
index 58d3955a31..49980a7d76 100644
--- a/esphome/components/rp2040_pwm/rp2040_pwm.h
+++ b/esphome/components/rp2040_pwm/rp2040_pwm.h
@@ -9,7 +9,7 @@
 
 namespace esphome::rp2040_pwm {
 
-class RP2040PWM : public output::FloatOutput, public Component {
+class RP2040PWM final : public output::FloatOutput, public Component {
  public:
   void set_pin(InternalGPIOPin *pin) { pin_ = pin; }
   void set_frequency(float frequency) { this->frequency_ = frequency; }
@@ -39,7 +39,7 @@ class RP2040PWM : public output::FloatOutput, public Component {
   bool frequency_changed_{false};
 };
 
-template<typename... Ts> class SetFrequencyAction : public Action<Ts...> {
+template<typename... Ts> class SetFrequencyAction final : public Action<Ts...> {
  public:
   SetFrequencyAction(RP2040PWM *parent) : parent_(parent) {}
   TEMPLATABLE_VALUE(float, frequency);
diff --git a/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.h b/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.h
index 8b1457926c..df0e2b0b16 100644
--- a/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.h
+++ b/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.h
@@ -18,7 +18,7 @@ namespace esphome::rpi_dpi_rgb {
 
 constexpr static const char *const TAG = "rpi_dpi_rgb";
 
-class RpiDpiRgb : public display::Display {
+class RpiDpiRgb final : public display::Display {
  public:
   void update() override { this->do_update_(); }
   void setup() override;
diff --git a/esphome/components/rtttl/rtttl.h b/esphome/components/rtttl/rtttl.h
index d060b6b024..256bdce5f2 100644
--- a/esphome/components/rtttl/rtttl.h
+++ b/esphome/components/rtttl/rtttl.h
@@ -27,7 +27,7 @@ enum class State : uint8_t {
   STOPPING,
 };
 
-class Rtttl : public Component {
+class Rtttl final : public Component {
  public:
 #ifdef USE_OUTPUT
   void set_output(output::FloatOutput *output) { this->output_ = output; }
@@ -116,7 +116,7 @@ class Rtttl : public Component {
 #endif
 };
 
-template<typename... Ts> class PlayAction : public Action<Ts...> {
+template<typename... Ts> class PlayAction final : public Action<Ts...> {
  public:
   PlayAction(Rtttl *rtttl) : rtttl_(rtttl) {}
   TEMPLATABLE_VALUE(std::string, value)
@@ -127,12 +127,12 @@ template<typename... Ts> class PlayAction : public Action<Ts...> {
   Rtttl *rtttl_;
 };
 
-template<typename... Ts> class StopAction : public Action<Ts...>, public Parented<Rtttl> {
+template<typename... Ts> class StopAction final : public Action<Ts...>, public Parented<Rtttl> {
  public:
   void play(const Ts &...x) override { this->parent_->stop(); }
 };
 
-template<typename... Ts> class IsPlayingCondition : public Condition<Ts...>, public Parented<Rtttl> {
+template<typename... Ts> class IsPlayingCondition final : public Condition<Ts...>, public Parented<Rtttl> {
  public:
   bool check(const Ts &...x) override { return this->parent_->is_playing(); }
 };
diff --git a/esphome/components/runtime_stats/runtime_stats.h b/esphome/components/runtime_stats/runtime_stats.h
index 888d48e672..270ce4c5dc 100644
--- a/esphome/components/runtime_stats/runtime_stats.h
+++ b/esphome/components/runtime_stats/runtime_stats.h
@@ -17,7 +17,7 @@ namespace runtime_stats {
 
 static const char *const TAG = "runtime_stats";
 
-class RuntimeStatsCollector {
+class RuntimeStatsCollector final {
  public:
   RuntimeStatsCollector();
 
diff --git a/esphome/components/ruuvi_ble/ruuvi_ble.h b/esphome/components/ruuvi_ble/ruuvi_ble.h
index 80b07d410b..e372b24944 100644
--- a/esphome/components/ruuvi_ble/ruuvi_ble.h
+++ b/esphome/components/ruuvi_ble/ruuvi_ble.h
@@ -25,7 +25,7 @@ bool parse_ruuvi_data_byte(uint8_t data_type, const uint8_t *data, uint8_t data_
 
 optional<RuuviParseResult> parse_ruuvi(const esp32_ble_tracker::ESPBTDevice &device);
 
-class RuuviListener : public esp32_ble_tracker::ESPBTDeviceListener {
+class RuuviListener final : public esp32_ble_tracker::ESPBTDeviceListener {
  public:
   bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override;
 };
diff --git a/esphome/components/ruuvitag/ruuvitag.h b/esphome/components/ruuvitag/ruuvitag.h
index 259675835d..9602b82afc 100644
--- a/esphome/components/ruuvitag/ruuvitag.h
+++ b/esphome/components/ruuvitag/ruuvitag.h
@@ -9,7 +9,7 @@
 
 namespace esphome::ruuvitag {
 
-class RuuviTag : public Component, public esp32_ble_tracker::ESPBTDeviceListener {
+class RuuviTag final : public Component, public esp32_ble_tracker::ESPBTDeviceListener {
  public:
   void set_address(uint64_t address) { address_ = address; }
 
diff --git a/esphome/components/rx8130/rx8130.h b/esphome/components/rx8130/rx8130.h
index 152bd10f27..0c738a9b78 100644
--- a/esphome/components/rx8130/rx8130.h
+++ b/esphome/components/rx8130/rx8130.h
@@ -6,7 +6,7 @@
 
 namespace esphome::rx8130 {
 
-class RX8130Component : public time::RealTimeClock, public i2c::I2CDevice {
+class RX8130Component final : public time::RealTimeClock, public i2c::I2CDevice {
  public:
   void setup() override;
   void update() override;
@@ -18,12 +18,12 @@ class RX8130Component : public time::RealTimeClock, public i2c::I2CDevice {
   void stop_(bool stop);
 };
 
-template<typename... Ts> class WriteAction : public Action<Ts...>, public Parented<RX8130Component> {
+template<typename... Ts> class WriteAction final : public Action<Ts...>, public Parented<RX8130Component> {
  public:
   void play(const Ts... x) override { this->parent_->write_time(); }
 };
 
-template<typename... Ts> class ReadAction : public Action<Ts...>, public Parented<RX8130Component> {
+template<typename... Ts> class ReadAction final : public Action<Ts...>, public Parented<RX8130Component> {
  public:
   void play(const Ts... x) override { this->parent_->read_time(); }
 };
diff --git a/esphome/components/safe_mode/automation.h b/esphome/components/safe_mode/automation.h
index 79b53c0881..e2858dff34 100644
--- a/esphome/components/safe_mode/automation.h
+++ b/esphome/components/safe_mode/automation.h
@@ -4,7 +4,7 @@
 
 namespace esphome::safe_mode {
 
-template<typename... Ts> class MarkSuccessfulAction : public Action<Ts...>, public Parented<SafeModeComponent> {
+template<typename... Ts> class MarkSuccessfulAction final : public Action<Ts...>, public Parented<SafeModeComponent> {
  public:
   void play(const Ts &...x) override { this->parent_->mark_successful(); }
 };
diff --git a/esphome/components/safe_mode/switch/safe_mode_switch.h b/esphome/components/safe_mode/switch/safe_mode_switch.h
index c73a2087d7..cbd79cd520 100644
--- a/esphome/components/safe_mode/switch/safe_mode_switch.h
+++ b/esphome/components/safe_mode/switch/safe_mode_switch.h
@@ -6,7 +6,7 @@
 
 namespace esphome::safe_mode {
 
-class SafeModeSwitch : public switch_::Switch, public Component {
+class SafeModeSwitch final : public switch_::Switch, public Component {
  public:
   void dump_config() override;
   void set_safe_mode(SafeModeComponent *safe_mode_component);
diff --git a/esphome/components/scd30/automation.h b/esphome/components/scd30/automation.h
index 1f04739893..a816ae1f26 100644
--- a/esphome/components/scd30/automation.h
+++ b/esphome/components/scd30/automation.h
@@ -6,7 +6,8 @@
 
 namespace esphome::scd30 {
 
-template<typename... Ts> class ForceRecalibrationWithReference : public Action<Ts...>, public Parented<SCD30Component> {
+template<typename... Ts>
+class ForceRecalibrationWithReference final : public Action<Ts...>, public Parented<SCD30Component> {
  public:
   void play(const Ts &...x) override {
     if (this->value_.has_value()) {
diff --git a/esphome/components/scd30/scd30.h b/esphome/components/scd30/scd30.h
index a5a5df1903..0605ab4175 100644
--- a/esphome/components/scd30/scd30.h
+++ b/esphome/components/scd30/scd30.h
@@ -7,7 +7,7 @@
 namespace esphome::scd30 {
 
 /// This class implements support for the Sensirion scd30 i2c GAS (VOC and CO2eq) sensors.
-class SCD30Component : public Component, public sensirion_common::SensirionI2CDevice {
+class SCD30Component final : public Component, public sensirion_common::SensirionI2CDevice {
  public:
   void set_co2_sensor(sensor::Sensor *co2) { co2_sensor_ = co2; }
   void set_humidity_sensor(sensor::Sensor *humidity) { humidity_sensor_ = humidity; }
diff --git a/esphome/components/scd4x/automation.h b/esphome/components/scd4x/automation.h
index e485289c95..4746c0c879 100644
--- a/esphome/components/scd4x/automation.h
+++ b/esphome/components/scd4x/automation.h
@@ -6,7 +6,8 @@
 
 namespace esphome::scd4x {
 
-template<typename... Ts> class PerformForcedCalibrationAction : public Action<Ts...>, public Parented<SCD4XComponent> {
+template<typename... Ts>
+class PerformForcedCalibrationAction final : public Action<Ts...>, public Parented<SCD4XComponent> {
  public:
   void play(const Ts &...x) override {
     if (this->value_.has_value()) {
@@ -18,7 +19,7 @@ template<typename... Ts> class PerformForcedCalibrationAction : public Action<Ts
   TEMPLATABLE_VALUE(uint16_t, value)
 };
 
-template<typename... Ts> class FactoryResetAction : public Action<Ts...>, public Parented<SCD4XComponent> {
+template<typename... Ts> class FactoryResetAction final : public Action<Ts...>, public Parented<SCD4XComponent> {
  public:
   void play(const Ts &...x) override { this->parent_->factory_reset(); }
 };
diff --git a/esphome/components/scd4x/scd4x.h b/esphome/components/scd4x/scd4x.h
index 3e4827ef14..4d5dedb5e9 100644
--- a/esphome/components/scd4x/scd4x.h
+++ b/esphome/components/scd4x/scd4x.h
@@ -22,7 +22,7 @@ enum MeasurementMode : uint8_t {
   SINGLE_SHOT_RHT_ONLY,
 };
 
-class SCD4XComponent : public PollingComponent, public sensirion_common::SensirionI2CDevice {
+class SCD4XComponent final : public PollingComponent, public sensirion_common::SensirionI2CDevice {
  public:
   void setup() override;
   void dump_config() override;