diff --git a/esphome/components/b_parasite/b_parasite.h b/esphome/components/b_parasite/b_parasite.h
index c719599b99..1d5ac6e702 100644
--- a/esphome/components/b_parasite/b_parasite.h
+++ b/esphome/components/b_parasite/b_parasite.h
@@ -8,7 +8,7 @@
 
 namespace esphome::b_parasite {
 
-class BParasite : public Component, public esp32_ble_tracker::ESPBTDeviceListener {
+class BParasite final : public Component, public esp32_ble_tracker::ESPBTDeviceListener {
  public:
   void set_address(uint64_t address) { address_ = address; };
   void set_bindkey(const std::string &bindkey);
diff --git a/esphome/components/ble_scanner/ble_scanner.h b/esphome/components/ble_scanner/ble_scanner.h
index c2d48741b1..c70ee637ef 100644
--- a/esphome/components/ble_scanner/ble_scanner.h
+++ b/esphome/components/ble_scanner/ble_scanner.h
@@ -12,7 +12,9 @@
 
 namespace esphome::ble_scanner {
 
-class BLEScanner : public text_sensor::TextSensor, public esp32_ble_tracker::ESPBTDeviceListener, public Component {
+class BLEScanner final : public text_sensor::TextSensor,
+                         public esp32_ble_tracker::ESPBTDeviceListener,
+                         public Component {
  public:
   bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override {
     char addr_buf[MAC_ADDRESS_PRETTY_BUFFER_SIZE];
diff --git a/esphome/components/bm8563/bm8563.h b/esphome/components/bm8563/bm8563.h
index eda2d1b3c0..5ca9714091 100644
--- a/esphome/components/bm8563/bm8563.h
+++ b/esphome/components/bm8563/bm8563.h
@@ -5,7 +5,7 @@
 
 namespace esphome::bm8563 {
 
-class BM8563 : public time::RealTimeClock, public i2c::I2CDevice {
+class BM8563 final : public time::RealTimeClock, public i2c::I2CDevice {
  public:
   void setup() override;
   void update() override;
@@ -34,17 +34,17 @@ class BM8563 : public time::RealTimeClock, public i2c::I2CDevice {
   uint8_t byte_to_bcd2_(uint8_t value);
 };
 
-template<typename... Ts> class WriteAction : public Action<Ts...>, public Parented<BM8563> {
+template<typename... Ts> class WriteAction final : public Action<Ts...>, public Parented<BM8563> {
  public:
   void play(const Ts &...x) override { this->parent_->write_time(); }
 };
 
-template<typename... Ts> class ReadAction : public Action<Ts...>, public Parented<BM8563> {
+template<typename... Ts> class ReadAction final : public Action<Ts...>, public Parented<BM8563> {
  public:
   void play(const Ts &...x) override { this->parent_->read_time(); }
 };
 
-template<typename... Ts> class TimerAction : public Action<Ts...>, public Parented<BM8563> {
+template<typename... Ts> class TimerAction final : public Action<Ts...>, public Parented<BM8563> {
  public:
   TEMPLATABLE_VALUE(uint32_t, duration)
 
diff --git a/esphome/components/bme280_i2c/bme280_i2c.h b/esphome/components/bme280_i2c/bme280_i2c.h
index ad4a283fc7..501556d3c4 100644
--- a/esphome/components/bme280_i2c/bme280_i2c.h
+++ b/esphome/components/bme280_i2c/bme280_i2c.h
@@ -7,7 +7,7 @@ namespace esphome::bme280_i2c {
 
 static const char *const TAG = "bme280_i2c.sensor";
 
-class BME280I2CComponent : public esphome::bme280_base::BME280Component, public i2c::I2CDevice {
+class BME280I2CComponent final : public esphome::bme280_base::BME280Component, public i2c::I2CDevice {
   bool read_byte(uint8_t a_register, uint8_t *data) override;
   bool write_byte(uint8_t a_register, uint8_t data) override;
   bool read_bytes(uint8_t a_register, uint8_t *data, size_t len) override;
diff --git a/esphome/components/bme280_spi/bme280_spi.h b/esphome/components/bme280_spi/bme280_spi.h
index 4e842e9596..3879151ea1 100644
--- a/esphome/components/bme280_spi/bme280_spi.h
+++ b/esphome/components/bme280_spi/bme280_spi.h
@@ -5,9 +5,9 @@
 
 namespace esphome::bme280_spi {
 
-class BME280SPIComponent : public esphome::bme280_base::BME280Component,
-                           public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                                 spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_200KHZ> {
+class BME280SPIComponent final : public esphome::bme280_base::BME280Component,
+                                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                       spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_200KHZ> {
   void setup() override;
   bool read_byte(uint8_t a_register, uint8_t *data) override;
   bool write_byte(uint8_t a_register, uint8_t data) override;
diff --git a/esphome/components/bme680/bme680.h b/esphome/components/bme680/bme680.h
index e40daf8720..a274578fc1 100644
--- a/esphome/components/bme680/bme680.h
+++ b/esphome/components/bme680/bme680.h
@@ -65,7 +65,7 @@ struct BME680CalibrationData {
   int8_t ambient_temperature;
 };
 
-class BME680Component : public PollingComponent, public i2c::I2CDevice {
+class BME680Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   /// Set the temperature oversampling value. Defaults to 16X.
   void set_temperature_oversampling(BME680Oversampling temperature_oversampling);
diff --git a/esphome/components/bme680_bsec/bme680_bsec.h b/esphome/components/bme680_bsec/bme680_bsec.h
index 742b07b59b..ff974d1c6f 100644
--- a/esphome/components/bme680_bsec/bme680_bsec.h
+++ b/esphome/components/bme680_bsec/bme680_bsec.h
@@ -34,7 +34,7 @@ enum SampleRate {
 
 #define BME680_BSEC_SAMPLE_RATE_LOG(r) (r == SAMPLE_RATE_DEFAULT ? "Default" : (r == SAMPLE_RATE_ULP ? "ULP" : "LP"))
 
-class BME680BSECComponent : public Component, public i2c::I2CDevice {
+class BME680BSECComponent final : public Component, public i2c::I2CDevice {
  public:
   void set_device_id(const std::string &devid) { this->device_id_.assign(devid); }
   void set_temperature_offset(float offset) { this->temperature_offset_ = offset; }
diff --git a/esphome/components/bme68x_bsec2_i2c/bme68x_bsec2_i2c.h b/esphome/components/bme68x_bsec2_i2c/bme68x_bsec2_i2c.h
index 6d20b61390..896d00d096 100644
--- a/esphome/components/bme68x_bsec2_i2c/bme68x_bsec2_i2c.h
+++ b/esphome/components/bme68x_bsec2_i2c/bme68x_bsec2_i2c.h
@@ -11,7 +11,7 @@
 
 namespace esphome::bme68x_bsec2_i2c {
 
-class BME68xBSEC2I2CComponent : public bme68x_bsec2::BME68xBSEC2Component, public i2c::I2CDevice {
+class BME68xBSEC2I2CComponent final : public bme68x_bsec2::BME68xBSEC2Component, public i2c::I2CDevice {
   void setup() override;
   void dump_config() override;
 
diff --git a/esphome/components/bmi160/bmi160.h b/esphome/components/bmi160/bmi160.h
index e86c353eaa..8af25a09ad 100644
--- a/esphome/components/bmi160/bmi160.h
+++ b/esphome/components/bmi160/bmi160.h
@@ -6,7 +6,7 @@
 
 namespace esphome::bmi160 {
 
-class BMI160Component : public PollingComponent, public i2c::I2CDevice {
+class BMI160Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/bmi270/bmi270.h b/esphome/components/bmi270/bmi270.h
index 7c5a2db015..56d6a60952 100644
--- a/esphome/components/bmi270/bmi270.h
+++ b/esphome/components/bmi270/bmi270.h
@@ -78,7 +78,7 @@ enum BMI270GyroODR : uint8_t {
 // ---Data class
 
 // Main component class
-class BMI270Component : public motion::MotionComponent, public i2c::I2CDevice {
+class BMI270Component final : public motion::MotionComponent, public i2c::I2CDevice {
  public:
   // Lifecycle
   void setup() override;
diff --git a/esphome/components/bmp085/bmp085.h b/esphome/components/bmp085/bmp085.h
index a64f3936f0..7012152257 100644
--- a/esphome/components/bmp085/bmp085.h
+++ b/esphome/components/bmp085/bmp085.h
@@ -6,7 +6,7 @@
 
 namespace esphome::bmp085 {
 
-class BMP085Component : public PollingComponent, public i2c::I2CDevice {
+class BMP085Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   void set_temperature(sensor::Sensor *temperature) { temperature_ = temperature; }
   void set_pressure(sensor::Sensor *pressure) { pressure_ = pressure; }
diff --git a/esphome/components/bmp280_i2c/bmp280_i2c.h b/esphome/components/bmp280_i2c/bmp280_i2c.h
index bf1c2fd624..a19203ff0a 100644
--- a/esphome/components/bmp280_i2c/bmp280_i2c.h
+++ b/esphome/components/bmp280_i2c/bmp280_i2c.h
@@ -8,7 +8,7 @@ namespace esphome::bmp280_i2c {
 static const char *const TAG = "bmp280_i2c.sensor";
 
 /// This class implements support for the BMP280 Temperature+Pressure i2c sensor.
-class BMP280I2CComponent : public esphome::bmp280_base::BMP280Component, public i2c::I2CDevice {
+class BMP280I2CComponent final : public esphome::bmp280_base::BMP280Component, public i2c::I2CDevice {
  public:
   bool bmp_read_byte(uint8_t a_register, uint8_t *data) override { return read_byte(a_register, data); }
   bool bmp_write_byte(uint8_t a_register, uint8_t data) override { return write_byte(a_register, data); }
diff --git a/esphome/components/bmp280_spi/bmp280_spi.h b/esphome/components/bmp280_spi/bmp280_spi.h
index 17d3999884..449167811d 100644
--- a/esphome/components/bmp280_spi/bmp280_spi.h
+++ b/esphome/components/bmp280_spi/bmp280_spi.h
@@ -5,9 +5,9 @@
 
 namespace esphome::bmp280_spi {
 
-class BMP280SPIComponent : public esphome::bmp280_base::BMP280Component,
-                           public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                                 spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_200KHZ> {
+class BMP280SPIComponent final : public esphome::bmp280_base::BMP280Component,
+                                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                       spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_200KHZ> {
   void setup() override;
   bool bmp_read_byte(uint8_t a_register, uint8_t *data) override;
   bool bmp_write_byte(uint8_t a_register, uint8_t data) override;
diff --git a/esphome/components/bmp3xx_i2c/bmp3xx_i2c.h b/esphome/components/bmp3xx_i2c/bmp3xx_i2c.h
index bec99cf9f8..93549fc890 100644
--- a/esphome/components/bmp3xx_i2c/bmp3xx_i2c.h
+++ b/esphome/components/bmp3xx_i2c/bmp3xx_i2c.h
@@ -4,7 +4,7 @@
 
 namespace esphome::bmp3xx_i2c {
 
-class BMP3XXI2CComponent : public bmp3xx_base::BMP3XXComponent, public i2c::I2CDevice {
+class BMP3XXI2CComponent final : public bmp3xx_base::BMP3XXComponent, public i2c::I2CDevice {
   bool read_byte(uint8_t a_register, uint8_t *data) override;
   bool write_byte(uint8_t a_register, uint8_t data) override;
   bool read_bytes(uint8_t a_register, uint8_t *data, size_t len) override;
diff --git a/esphome/components/bmp3xx_spi/bmp3xx_spi.h b/esphome/components/bmp3xx_spi/bmp3xx_spi.h
index fa0c0e1b47..7e101cc3a1 100644
--- a/esphome/components/bmp3xx_spi/bmp3xx_spi.h
+++ b/esphome/components/bmp3xx_spi/bmp3xx_spi.h
@@ -4,9 +4,9 @@
 
 namespace esphome::bmp3xx_spi {
 
-class BMP3XXSPIComponent : public bmp3xx_base::BMP3XXComponent,
-                           public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                                 spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
+class BMP3XXSPIComponent final : public bmp3xx_base::BMP3XXComponent,
+                                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                       spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
   void setup() override;
   bool read_byte(uint8_t a_register, uint8_t *data) override;
   bool write_byte(uint8_t a_register, uint8_t data) override;
diff --git a/esphome/components/bmp581_i2c/bmp581_i2c.h b/esphome/components/bmp581_i2c/bmp581_i2c.h
index a4e43daf64..126ffd6a60 100644
--- a/esphome/components/bmp581_i2c/bmp581_i2c.h
+++ b/esphome/components/bmp581_i2c/bmp581_i2c.h
@@ -8,7 +8,7 @@ namespace esphome::bmp581_i2c {
 static const char *const TAG = "bmp581_i2c.sensor";
 
 /// This class implements support for the BMP581 Temperature+Pressure i2c sensor.
-class BMP581I2CComponent : public esphome::bmp581_base::BMP581Component, public i2c::I2CDevice {
+class BMP581I2CComponent final : public esphome::bmp581_base::BMP581Component, public i2c::I2CDevice {
  public:
   bool bmp_read_byte(uint8_t a_register, uint8_t *data) override { return read_byte(a_register, data); }
   bool bmp_write_byte(uint8_t a_register, uint8_t data) override { return write_byte(a_register, data); }
diff --git a/esphome/components/bmp581_spi/bmp581_spi.h b/esphome/components/bmp581_spi/bmp581_spi.h
index 57f75588d5..e5b6cf4476 100644
--- a/esphome/components/bmp581_spi/bmp581_spi.h
+++ b/esphome/components/bmp581_spi/bmp581_spi.h
@@ -6,9 +6,9 @@
 namespace esphome::bmp581_spi {
 
 // BMP581 is technically compatible with SPI Mode0 and Mode3. Default to Mode3.
-class BMP581SPIComponent : public esphome::bmp581_base::BMP581Component,
-                           public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
-                                                 spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_200KHZ> {
+class BMP581SPIComponent final : public esphome::bmp581_base::BMP581Component,
+                                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                                       spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_200KHZ> {
  public:
   void setup() override;
   bool bmp_read_byte(uint8_t a_register, uint8_t *data) override;
diff --git a/esphome/components/bp1658cj/bp1658cj.h b/esphome/components/bp1658cj/bp1658cj.h
index 8905642ec4..666a145804 100644
--- a/esphome/components/bp1658cj/bp1658cj.h
+++ b/esphome/components/bp1658cj/bp1658cj.h
@@ -7,7 +7,7 @@
 
 namespace esphome::bp1658cj {
 
-class BP1658CJ : public Component {
+class BP1658CJ final : public Component {
  public:
   class Channel;
 
@@ -29,7 +29,7 @@ class BP1658CJ : public Component {
   /// Send new values if they were updated.
   void loop() override;
 
-  class Channel : public output::FloatOutput {
+  class Channel final : public output::FloatOutput {
    public:
     void set_parent(BP1658CJ *parent) { parent_ = parent; }
     void set_channel(uint8_t channel) { channel_ = channel; }
diff --git a/esphome/components/bp5758d/bp5758d.h b/esphome/components/bp5758d/bp5758d.h
index f07d51fe51..572108b4e6 100644
--- a/esphome/components/bp5758d/bp5758d.h
+++ b/esphome/components/bp5758d/bp5758d.h
@@ -7,7 +7,7 @@
 
 namespace esphome::bp5758d {
 
-class BP5758D : public Component {
+class BP5758D final : public Component {
  public:
   class Channel;
 
@@ -23,7 +23,7 @@ class BP5758D : public Component {
   /// Send new values if they were updated.
   void loop() override;
 
-  class Channel : public output::FloatOutput {
+  class Channel final : public output::FloatOutput {
    public:
     void set_parent(BP5758D *parent) { parent_ = parent; }
     void set_channel(uint8_t channel) { channel_ = channel; }
diff --git a/esphome/components/bthome_mithermometer/bthome_ble.h b/esphome/components/bthome_mithermometer/bthome_ble.h
index 9bec8ba7a1..924858e449 100644
--- a/esphome/components/bthome_mithermometer/bthome_ble.h
+++ b/esphome/components/bthome_mithermometer/bthome_ble.h
@@ -12,7 +12,7 @@
 
 namespace esphome::bthome_mithermometer {
 
-class BTHomeMiThermometer : public esp32_ble_tracker::ESPBTDeviceListener, public Component {
+class BTHomeMiThermometer final : public esp32_ble_tracker::ESPBTDeviceListener, public Component {
  public:
   void set_address(uint64_t address) { this->address_ = address; }
   void set_bindkey(std::initializer_list<uint8_t> bindkey);
diff --git a/esphome/components/button/automation.h b/esphome/components/button/automation.h
index 6a54b141a3..d55d43ea37 100644
--- a/esphome/components/button/automation.h
+++ b/esphome/components/button/automation.h
@@ -6,7 +6,7 @@
 
 namespace esphome::button {
 
-template<typename... Ts> class PressAction : public Action<Ts...> {
+template<typename... Ts> class PressAction final : public Action<Ts...> {
  public:
   explicit PressAction(Button *button) : button_(button) {}
 
@@ -16,7 +16,7 @@ template<typename... Ts> class PressAction : public Action<Ts...> {
   Button *button_;
 };
 
-class ButtonPressTrigger : public Trigger<> {
+class ButtonPressTrigger final : public Trigger<> {
  public:
   ButtonPressTrigger(Button *button) {
     button->add_on_press_callback([this]() { this->trigger(); });
diff --git a/esphome/components/camera_encoder/encoder_buffer_impl.h b/esphome/components/camera_encoder/encoder_buffer_impl.h
index d394daff14..b506cb47e0 100644
--- a/esphome/components/camera_encoder/encoder_buffer_impl.h
+++ b/esphome/components/camera_encoder/encoder_buffer_impl.h
@@ -5,7 +5,7 @@
 
 namespace esphome::camera_encoder {
 
-class EncoderBufferImpl : public camera::EncoderBuffer {
+class EncoderBufferImpl final : public camera::EncoderBuffer {
  public:
   // --- EncoderBuffer  ---
   bool set_buffer_size(size_t size) override;
diff --git a/esphome/components/camera_encoder/esp32_camera_jpeg_encoder.h b/esphome/components/camera_encoder/esp32_camera_jpeg_encoder.h
index 0ede366e73..5ec6a98cb9 100644
--- a/esphome/components/camera_encoder/esp32_camera_jpeg_encoder.h
+++ b/esphome/components/camera_encoder/esp32_camera_jpeg_encoder.h
@@ -11,7 +11,7 @@
 namespace esphome::camera_encoder {
 
 /// Encoder that uses the software-based JPEG implementation from Espressif's esp32-camera component.
-class ESP32CameraJPEGEncoder : public camera::Encoder {
+class ESP32CameraJPEGEncoder final : public camera::Encoder {
  public:
   /// Constructs a ESP32CameraJPEGEncoder instance.
   /// @param quality Sets the quality of the encoded image (1-100).
diff --git a/esphome/components/canbus/canbus.h b/esphome/components/canbus/canbus.h
index 691d7384f1..1bc4d6e345 100644
--- a/esphome/components/canbus/canbus.h
+++ b/esphome/components/canbus/canbus.h
@@ -106,7 +106,7 @@ class Canbus : public Component {
   virtual Error read_message(struct CanFrame *frame) = 0;
 };
 
-template<typename... Ts> class CanbusSendAction : public Action<Ts...>, public Parented<Canbus> {
+template<typename... Ts> class CanbusSendAction final : public Action<Ts...>, public Parented<Canbus> {
  public:
   void set_data_template(std::vector<uint8_t> (*func)(Ts...)) {
     // Stateless lambdas (generated by ESPHome) implicitly convert to function pointers
@@ -154,7 +154,7 @@ template<typename... Ts> class CanbusSendAction : public Action<Ts...>, public P
   } data_;
 };
 
-class CanbusTrigger : public Trigger<std::vector<uint8_t>, uint32_t, bool>, public Component {
+class CanbusTrigger final : public Trigger<std::vector<uint8_t>, uint32_t, bool>, public Component {
   friend class Canbus;
 
  public:
diff --git a/esphome/components/cap1188/cap1188.h b/esphome/components/cap1188/cap1188.h
index 848e6fe430..a4abb270e7 100644
--- a/esphome/components/cap1188/cap1188.h
+++ b/esphome/components/cap1188/cap1188.h
@@ -26,7 +26,7 @@ enum {
   CAP1188_SENSITVITY = 0x1f,
 };
 
-class CAP1188Channel : public binary_sensor::BinarySensor {
+class CAP1188Channel final : public binary_sensor::BinarySensor {
  public:
   void set_channel(uint8_t channel) { channel_ = channel; }
   void process(uint8_t data) { this->publish_state(static_cast<bool>(data & (1 << this->channel_))); }
@@ -35,7 +35,7 @@ class CAP1188Channel : public binary_sensor::BinarySensor {
   uint8_t channel_{0};
 };
 
-class CAP1188Component : public Component, public i2c::I2CDevice {
+class CAP1188Component final : public Component, public i2c::I2CDevice {
  public:
   void register_channel(CAP1188Channel *channel) { this->channels_.push_back(channel); }
   void set_touch_threshold(uint8_t touch_threshold) { this->touch_threshold_ = touch_threshold; };
diff --git a/esphome/components/captive_portal/captive_portal.h b/esphome/components/captive_portal/captive_portal.h
index 8c8b43e608..b47af9d978 100644
--- a/esphome/components/captive_portal/captive_portal.h
+++ b/esphome/components/captive_portal/captive_portal.h
@@ -14,7 +14,7 @@
 
 namespace esphome::captive_portal {
 
-class CaptivePortal : public AsyncWebHandler, public Component {
+class CaptivePortal final : public AsyncWebHandler, public Component {
  public:
   CaptivePortal(web_server_base::WebServerBase *base);
   void setup() override;
diff --git a/esphome/components/cc1101/cc1101.h b/esphome/components/cc1101/cc1101.h
index 000a13d586..065ffd5250 100644
--- a/esphome/components/cc1101/cc1101.h
+++ b/esphome/components/cc1101/cc1101.h
@@ -16,9 +16,9 @@ class CC1101Listener {
   virtual void on_packet(const std::vector<uint8_t> &packet, float freq_offset, float rssi, uint8_t lqi) = 0;
 };
 
-class CC1101Component : public Component,
-                        public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                              spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
+class CC1101Component final : public Component,
+                              public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                    spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
  public:
   CC1101Component();
 
@@ -119,27 +119,27 @@ class CC1101Component : public Component,
 };
 
 // Action Wrappers
-template<typename... Ts> class BeginTxAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class BeginTxAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   void play(const Ts &...x) override { this->parent_->begin_tx(); }
 };
 
-template<typename... Ts> class BeginRxAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class BeginRxAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   void play(const Ts &...x) override { this->parent_->begin_rx(); }
 };
 
-template<typename... Ts> class ResetAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class ResetAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   void play(const Ts &...x) override { this->parent_->reset(); }
 };
 
-template<typename... Ts> class SetIdleAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetIdleAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   void play(const Ts &...x) override { this->parent_->set_idle(); }
 };
 
-template<typename... Ts> class SendPacketAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SendPacketAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   void set_data_template(std::function<std::vector<uint8_t>(Ts...)> func) { this->data_func_ = func; }
   void set_data_static(const uint8_t *data, size_t len) {
@@ -163,79 +163,80 @@ template<typename... Ts> class SendPacketAction : public Action<Ts...>, public P
   size_t data_static_len_{0};
 };
 
-template<typename... Ts> class SetSymbolRateAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetSymbolRateAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(float, symbol_rate)
   void play(const Ts &...x) override { this->parent_->set_symbol_rate(this->symbol_rate_.value(x...)); }
 };
 
-template<typename... Ts> class SetFrequencyAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetFrequencyAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(float, frequency)
   void play(const Ts &...x) override { this->parent_->set_frequency(this->frequency_.value(x...)); }
 };
 
-template<typename... Ts> class SetOutputPowerAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetOutputPowerAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(float, output_power)
   void play(const Ts &...x) override { this->parent_->set_output_power(this->output_power_.value(x...)); }
 };
 
-template<typename... Ts> class SetModulationTypeAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetModulationTypeAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(Modulation, modulation_type)
   void play(const Ts &...x) override { this->parent_->set_modulation_type(this->modulation_type_.value(x...)); }
 };
 
-template<typename... Ts> class SetRxAttenuationAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetRxAttenuationAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(RxAttenuation, rx_attenuation)
   void play(const Ts &...x) override { this->parent_->set_rx_attenuation(this->rx_attenuation_.value(x...)); }
 };
 
-template<typename... Ts> class SetDcBlockingFilterAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts>
+class SetDcBlockingFilterAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(bool, dc_blocking_filter)
   void play(const Ts &...x) override { this->parent_->set_dc_blocking_filter(this->dc_blocking_filter_.value(x...)); }
 };
 
-template<typename... Ts> class SetManchesterAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetManchesterAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(bool, manchester)
   void play(const Ts &...x) override { this->parent_->set_manchester(this->manchester_.value(x...)); }
 };
 
-template<typename... Ts> class SetFilterBandwidthAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetFilterBandwidthAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(float, filter_bandwidth)
   void play(const Ts &...x) override { this->parent_->set_filter_bandwidth(this->filter_bandwidth_.value(x...)); }
 };
 
-template<typename... Ts> class SetFskDeviationAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetFskDeviationAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(float, fsk_deviation)
   void play(const Ts &...x) override { this->parent_->set_fsk_deviation(this->fsk_deviation_.value(x...)); }
 };
 
-template<typename... Ts> class SetMskDeviationAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetMskDeviationAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(uint8_t, msk_deviation)
   void play(const Ts &...x) override { this->parent_->set_msk_deviation(this->msk_deviation_.value(x...)); }
 };
 
-template<typename... Ts> class SetChannelAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetChannelAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(uint8_t, channel)
   void play(const Ts &...x) override { this->parent_->set_channel(this->channel_.value(x...)); }
 };
 
-template<typename... Ts> class SetChannelSpacingAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetChannelSpacingAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(float, channel_spacing)
   void play(const Ts &...x) override { this->parent_->set_channel_spacing(this->channel_spacing_.value(x...)); }
 };
 
-template<typename... Ts> class SetIfFrequencyAction : public Action<Ts...>, public Parented<CC1101Component> {
+template<typename... Ts> class SetIfFrequencyAction final : public Action<Ts...>, public Parented<CC1101Component> {
  public:
   TEMPLATABLE_VALUE(float, if_frequency)
   void play(const Ts &...x) override { this->parent_->set_if_frequency(this->if_frequency_.value(x...)); }
diff --git a/esphome/components/ccs811/ccs811.h b/esphome/components/ccs811/ccs811.h
index fde2494753..fb83f842fd 100644
--- a/esphome/components/ccs811/ccs811.h
+++ b/esphome/components/ccs811/ccs811.h
@@ -8,7 +8,7 @@
 
 namespace esphome::ccs811 {
 
-class CCS811Component : public PollingComponent, public i2c::I2CDevice {
+class CCS811Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   void set_co2(sensor::Sensor *co2) { co2_ = co2; }
   void set_tvoc(sensor::Sensor *tvoc) { tvoc_ = tvoc; }
diff --git a/esphome/components/cd74hc4067/cd74hc4067.h b/esphome/components/cd74hc4067/cd74hc4067.h
index f41b5e294a..3e773a3c8c 100644
--- a/esphome/components/cd74hc4067/cd74hc4067.h
+++ b/esphome/components/cd74hc4067/cd74hc4067.h
@@ -7,7 +7,7 @@
 
 namespace esphome::cd74hc4067 {
 
-class CD74HC4067Component : public Component {
+class CD74HC4067Component final : public Component {
  public:
   /// Set up the internal sensor array.
   void setup() override;
@@ -38,7 +38,7 @@ class CD74HC4067Component : public Component {
   uint32_t switch_delay_;
 };
 
-class CD74HC4067Sensor : public sensor::Sensor, public PollingComponent, public voltage_sampler::VoltageSampler {
+class CD74HC4067Sensor final : public sensor::Sensor, public PollingComponent, public voltage_sampler::VoltageSampler {
  public:
   CD74HC4067Sensor(CD74HC4067Component *parent);
 
diff --git a/esphome/components/ch422g/ch422g.h b/esphome/components/ch422g/ch422g.h
index f74e0c46a4..a8729225e8 100644
--- a/esphome/components/ch422g/ch422g.h
+++ b/esphome/components/ch422g/ch422g.h
@@ -6,7 +6,7 @@
 
 namespace esphome::ch422g {
 
-class CH422GComponent : public Component, public i2c::I2CDevice {
+class CH422GComponent final : public Component, public i2c::I2CDevice {
  public:
   CH422GComponent() = default;
 
@@ -42,7 +42,7 @@ class CH422GComponent : public Component, public i2c::I2CDevice {
 };
 
 /// Helper class to expose a CH422G pin as a GPIO pin.
-class CH422GGPIOPin : public GPIOPin {
+class CH422GGPIOPin final : public GPIOPin {
  public:
   void setup() override{};
   void pin_mode(gpio::Flags flags) override;
diff --git a/esphome/components/ch423/ch423.h b/esphome/components/ch423/ch423.h
index d384971a72..fbfffb521d 100644
--- a/esphome/components/ch423/ch423.h
+++ b/esphome/components/ch423/ch423.h
@@ -6,7 +6,7 @@
 
 namespace esphome::ch423 {
 
-class CH423Component : public Component, public i2c::I2CDevice {
+class CH423Component final : public Component, public i2c::I2CDevice {
  public:
   CH423Component() = default;
 
@@ -41,7 +41,7 @@ class CH423Component : public Component, public i2c::I2CDevice {
 };
 
 /// Helper class to expose a CH423 pin as a GPIO pin.
-class CH423GPIOPin : public GPIOPin {
+class CH423GPIOPin final : public GPIOPin {
  public:
   void setup() override{};
   void pin_mode(gpio::Flags flags) override;