diff --git a/esphome/components/sm10bit_base/sm10bit_base.h b/esphome/components/sm10bit_base/sm10bit_base.h
index b419b86dbf..a22c4da36e 100644
--- a/esphome/components/sm10bit_base/sm10bit_base.h
+++ b/esphome/components/sm10bit_base/sm10bit_base.h
@@ -27,7 +27,7 @@ class Sm10BitBase : public Component {
   void dump_config() override;
   void loop() override;
 
-  class Channel : public output::FloatOutput {
+  class Channel final : public output::FloatOutput {
    public:
     void set_parent(Sm10BitBase *parent) { parent_ = parent; }
     void set_channel(uint8_t channel) { channel_ = channel; }
diff --git a/esphome/components/sm16716/sm16716.h b/esphome/components/sm16716/sm16716.h
index 09deb2e8bf..8a76fd86f0 100644
--- a/esphome/components/sm16716/sm16716.h
+++ b/esphome/components/sm16716/sm16716.h
@@ -7,7 +7,7 @@
 
 namespace esphome::sm16716 {
 
-class SM16716 : public Component {
+class SM16716 final : public Component {
  public:
   class Channel;
 
@@ -25,7 +25,7 @@ class SM16716 : 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(SM16716 *parent) { parent_ = parent; }
     void set_channel(uint8_t channel) { channel_ = channel; }
diff --git a/esphome/components/sm2135/sm2135.h b/esphome/components/sm2135/sm2135.h
index 040ec14b7f..6bf77cf554 100644
--- a/esphome/components/sm2135/sm2135.h
+++ b/esphome/components/sm2135/sm2135.h
@@ -21,7 +21,7 @@ enum SM2135Current : uint8_t {
   SM2135_CURRENT_60MA = 0x0A,
 };
 
-class SM2135 : public Component {
+class SM2135 final : public Component {
  public:
   class Channel;
 
@@ -49,7 +49,7 @@ class SM2135 : 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(SM2135 *parent) { parent_ = parent; }
     void set_channel(uint8_t channel) { channel_ = channel; }
diff --git a/esphome/components/sm2235/sm2235.h b/esphome/components/sm2235/sm2235.h
index cdb754e298..dbb51945f6 100644
--- a/esphome/components/sm2235/sm2235.h
+++ b/esphome/components/sm2235/sm2235.h
@@ -6,7 +6,7 @@
 
 namespace esphome::sm2235 {
 
-class SM2235 : public sm10bit_base::Sm10BitBase {
+class SM2235 final : public sm10bit_base::Sm10BitBase {
  public:
   SM2235() = default;
 
diff --git a/esphome/components/sm2335/sm2335.h b/esphome/components/sm2335/sm2335.h
index 44e0e5b03f..7c4f0269aa 100644
--- a/esphome/components/sm2335/sm2335.h
+++ b/esphome/components/sm2335/sm2335.h
@@ -6,7 +6,7 @@
 
 namespace esphome::sm2335 {
 
-class SM2335 : public sm10bit_base::Sm10BitBase {
+class SM2335 final : public sm10bit_base::Sm10BitBase {
  public:
   SM2335() = default;
 
diff --git a/esphome/components/sm300d2/sm300d2.h b/esphome/components/sm300d2/sm300d2.h
index 629e758e30..87c60e92a1 100644
--- a/esphome/components/sm300d2/sm300d2.h
+++ b/esphome/components/sm300d2/sm300d2.h
@@ -6,7 +6,7 @@
 
 namespace esphome::sm300d2 {
 
-class SM300D2Sensor : public PollingComponent, public uart::UARTDevice {
+class SM300D2Sensor final : public PollingComponent, public uart::UARTDevice {
  public:
   void set_co2_sensor(sensor::Sensor *co2_sensor) { co2_sensor_ = co2_sensor; }
   void set_formaldehyde_sensor(sensor::Sensor *formaldehyde_sensor) { formaldehyde_sensor_ = formaldehyde_sensor; }
diff --git a/esphome/components/sml/sensor/sml_sensor.h b/esphome/components/sml/sensor/sml_sensor.h
index d2f8a7743f..a73af28f66 100644
--- a/esphome/components/sml/sensor/sml_sensor.h
+++ b/esphome/components/sml/sensor/sml_sensor.h
@@ -4,7 +4,7 @@
 
 namespace esphome::sml {
 
-class SmlSensor : public SmlListener, public sensor::Sensor, public Component {
+class SmlSensor final : public SmlListener, public sensor::Sensor, public Component {
  public:
   SmlSensor(std::string server_id, std::string obis_code);
   void publish_val(const ObisInfo &obis_info) override;
diff --git a/esphome/components/sml/sml.h b/esphome/components/sml/sml.h
index 60a80e3ad8..b59526648d 100644
--- a/esphome/components/sml/sml.h
+++ b/esphome/components/sml/sml.h
@@ -17,7 +17,7 @@ class SmlListener {
   virtual void publish_val(const ObisInfo &obis_info){};
 };
 
-class Sml : public Component, public uart::UARTDevice {
+class Sml final : public Component, public uart::UARTDevice {
  public:
   void register_sml_listener(SmlListener *listener);
   void loop() override;
diff --git a/esphome/components/sml/text_sensor/sml_text_sensor.h b/esphome/components/sml/text_sensor/sml_text_sensor.h
index 6194f22349..d445d514e9 100644
--- a/esphome/components/sml/text_sensor/sml_text_sensor.h
+++ b/esphome/components/sml/text_sensor/sml_text_sensor.h
@@ -6,7 +6,7 @@
 
 namespace esphome::sml {
 
-class SmlTextSensor : public SmlListener, public text_sensor::TextSensor, public Component {
+class SmlTextSensor final : public SmlListener, public text_sensor::TextSensor, public Component {
  public:
   SmlTextSensor(std::string server_id, std::string obis_code, SmlType format);
   void publish_val(const ObisInfo &obis_info) override;
diff --git a/esphome/components/smt100/smt100.h b/esphome/components/smt100/smt100.h
index b68151eeb4..55977a5caf 100644
--- a/esphome/components/smt100/smt100.h
+++ b/esphome/components/smt100/smt100.h
@@ -6,7 +6,7 @@
 
 namespace esphome::smt100 {
 
-class SMT100Component : public PollingComponent, public uart::UARTDevice {
+class SMT100Component final : public PollingComponent, public uart::UARTDevice {
   static const uint16_t MAX_LINE_LENGTH = 31;
 
  public:
diff --git a/esphome/components/sn74hc165/sn74hc165.h b/esphome/components/sn74hc165/sn74hc165.h
index 596f2eb4f5..9e80aa67bf 100644
--- a/esphome/components/sn74hc165/sn74hc165.h
+++ b/esphome/components/sn74hc165/sn74hc165.h
@@ -8,7 +8,7 @@
 
 namespace esphome::sn74hc165 {
 
-class SN74HC165Component : public Component {
+class SN74HC165Component final : public Component {
  public:
   SN74HC165Component() = default;
 
@@ -40,7 +40,7 @@ class SN74HC165Component : public Component {
 };
 
 /// Helper class to expose a SC74HC165 pin as an internal input GPIO pin.
-class SN74HC165GPIOPin : public GPIOPin, public Parented<SN74HC165Component> {
+class SN74HC165GPIOPin final : public GPIOPin, public Parented<SN74HC165Component> {
  public:
   void setup() override {}
   void pin_mode(gpio::Flags flags) override {}
diff --git a/esphome/components/sn74hc595/sn74hc595.h b/esphome/components/sn74hc595/sn74hc595.h
index 23977e3d04..0b291b9ee5 100644
--- a/esphome/components/sn74hc595/sn74hc595.h
+++ b/esphome/components/sn74hc595/sn74hc595.h
@@ -47,7 +47,7 @@ class SN74HC595Component : public Component {
 };
 
 /// Helper class to expose a SC74HC595 pin as an internal output GPIO pin.
-class SN74HC595GPIOPin : public GPIOPin, public Parented<SN74HC595Component> {
+class SN74HC595GPIOPin final : public GPIOPin, public Parented<SN74HC595Component> {
  public:
   void setup() override {}
   void pin_mode(gpio::Flags flags) override {}
@@ -66,7 +66,7 @@ class SN74HC595GPIOPin : public GPIOPin, public Parented<SN74HC595Component> {
   bool inverted_;
 };
 
-class SN74HC595GPIOComponent : public SN74HC595Component {
+class SN74HC595GPIOComponent final : public SN74HC595Component {
  public:
   void setup() override;
   void set_data_pin(GPIOPin *pin) { data_pin_ = pin; }
@@ -80,9 +80,9 @@ class SN74HC595GPIOComponent : public SN74HC595Component {
 };
 
 #ifdef USE_SPI
-class SN74HC595SPIComponent : public SN74HC595Component,
-                              public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                                    spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_4MHZ> {
+class SN74HC595SPIComponent final : public SN74HC595Component,
+                                    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/sntp/sntp_component.h b/esphome/components/sntp/sntp_component.h
index ef737c1978..686fb30d25 100644
--- a/esphome/components/sntp/sntp_component.h
+++ b/esphome/components/sntp/sntp_component.h
@@ -15,7 +15,7 @@ namespace esphome::sntp {
 /// The C library (newlib) available on ESPs only supports TZ strings that specify an offset and DST info;
 /// you cannot specify zone names or paths to zoneinfo files.
 /// \see https://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html
-class SNTPComponent : public time::RealTimeClock {
+class SNTPComponent final : public time::RealTimeClock {
  public:
   SNTPComponent(const std::array<const char *, SNTP_SERVER_COUNT> &servers) : servers_(servers) {}
 
diff --git a/esphome/components/sonoff_d1/sonoff_d1.h b/esphome/components/sonoff_d1/sonoff_d1.h
index a92877e6c8..b7fcb1efa7 100644
--- a/esphome/components/sonoff_d1/sonoff_d1.h
+++ b/esphome/components/sonoff_d1/sonoff_d1.h
@@ -41,7 +41,7 @@
 
 namespace esphome::sonoff_d1 {
 
-class SonoffD1Output : public light::LightOutput, public uart::UARTDevice, public Component {
+class SonoffD1Output final : public light::LightOutput, public uart::UARTDevice, public Component {
  public:
   // LightOutput methods
   light::LightTraits get_traits() override;
diff --git a/esphome/components/sound_level/sound_level.h b/esphome/components/sound_level/sound_level.h
index aabea62ca4..94c18421ba 100644
--- a/esphome/components/sound_level/sound_level.h
+++ b/esphome/components/sound_level/sound_level.h
@@ -12,7 +12,7 @@
 
 namespace esphome::sound_level {
 
-class SoundLevelComponent : public Component {
+class SoundLevelComponent final : public Component {
  public:
   void dump_config() override;
   void setup() override;
@@ -59,12 +59,12 @@ class SoundLevelComponent : public Component {
   uint32_t measurement_duration_ms_;
 };
 
-template<typename... Ts> class StartAction : public Action<Ts...>, public Parented<SoundLevelComponent> {
+template<typename... Ts> class StartAction final : public Action<Ts...>, public Parented<SoundLevelComponent> {
  public:
   void play(const Ts &...x) override { this->parent_->start(); }
 };
 
-template<typename... Ts> class StopAction : public Action<Ts...>, public Parented<SoundLevelComponent> {
+template<typename... Ts> class StopAction final : public Action<Ts...>, public Parented<SoundLevelComponent> {
  public:
   void play(const Ts &...x) override { this->parent_->stop(); }
 };
diff --git a/esphome/components/spa06_i2c/spa06_i2c.h b/esphome/components/spa06_i2c/spa06_i2c.h
index 6b4bce3a4e..05e60cbb5d 100644
--- a/esphome/components/spa06_i2c/spa06_i2c.h
+++ b/esphome/components/spa06_i2c/spa06_i2c.h
@@ -4,7 +4,7 @@
 
 namespace esphome::spa06_i2c {
 
-class SPA06I2CComponent : public spa06_base::SPA06Component, public i2c::I2CDevice {
+class SPA06I2CComponent final : public spa06_base::SPA06Component, public i2c::I2CDevice {
  public:
   bool spa_read_byte(uint8_t a_register, uint8_t *data) override { return read_byte(a_register, data); }
   bool spa_write_byte(uint8_t a_register, uint8_t data) override { return write_byte(a_register, data); }
diff --git a/esphome/components/spa06_spi/spa06_spi.h b/esphome/components/spa06_spi/spa06_spi.h
index ffbc162d6f..56d72df620 100644
--- a/esphome/components/spa06_spi/spa06_spi.h
+++ b/esphome/components/spa06_spi/spa06_spi.h
@@ -5,9 +5,9 @@
 
 namespace esphome::spa06_spi {
 
-class SPA06SPIComponent : public spa06_base::SPA06Component,
-                          public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
-                                                spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_200KHZ> {
+class SPA06SPIComponent final : public spa06_base::SPA06Component,
+                                public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                                      spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_200KHZ> {
   void setup() override;
   bool spa_read_byte(uint8_t a_register, uint8_t *data) override;
   bool spa_write_byte(uint8_t a_register, uint8_t data) override;
diff --git a/esphome/components/speaker/automation.h b/esphome/components/speaker/automation.h
index 9997b064d5..443588a04c 100644
--- a/esphome/components/speaker/automation.h
+++ b/esphome/components/speaker/automation.h
@@ -7,7 +7,7 @@
 
 namespace esphome::speaker {
 
-template<typename... Ts> class PlayAction : public Action<Ts...>, public Parented<Speaker> {
+template<typename... Ts> class PlayAction final : public Action<Ts...>, public Parented<Speaker> {
  public:
   void set_data_template(std::vector<uint8_t> (*func)(Ts...)) {
     this->data_.func = func;
@@ -38,12 +38,12 @@ template<typename... Ts> class PlayAction : public Action<Ts...>, public Parente
   } data_;
 };
 
-template<typename... Ts> class VolumeSetAction : public Action<Ts...>, public Parented<Speaker> {
+template<typename... Ts> class VolumeSetAction final : public Action<Ts...>, public Parented<Speaker> {
   TEMPLATABLE_VALUE(float, volume)
   void play(const Ts &...x) override { this->parent_->set_volume(this->volume_.value(x...)); }
 };
 
-template<typename... Ts> class MuteOnAction : public Action<Ts...> {
+template<typename... Ts> class MuteOnAction final : public Action<Ts...> {
  public:
   explicit MuteOnAction(Speaker *speaker) : speaker_(speaker) {}
 
@@ -53,7 +53,7 @@ template<typename... Ts> class MuteOnAction : public Action<Ts...> {
   Speaker *speaker_;
 };
 
-template<typename... Ts> class MuteOffAction : public Action<Ts...> {
+template<typename... Ts> class MuteOffAction final : public Action<Ts...> {
  public:
   explicit MuteOffAction(Speaker *speaker) : speaker_(speaker) {}
 
@@ -63,22 +63,22 @@ template<typename... Ts> class MuteOffAction : public Action<Ts...> {
   Speaker *speaker_;
 };
 
-template<typename... Ts> class StopAction : public Action<Ts...>, public Parented<Speaker> {
+template<typename... Ts> class StopAction final : public Action<Ts...>, public Parented<Speaker> {
  public:
   void play(const Ts &...x) override { this->parent_->stop(); }
 };
 
-template<typename... Ts> class FinishAction : public Action<Ts...>, public Parented<Speaker> {
+template<typename... Ts> class FinishAction final : public Action<Ts...>, public Parented<Speaker> {
  public:
   void play(const Ts &...x) override { this->parent_->finish(); }
 };
 
-template<typename... Ts> class IsPlayingCondition : public Condition<Ts...>, public Parented<Speaker> {
+template<typename... Ts> class IsPlayingCondition final : public Condition<Ts...>, public Parented<Speaker> {
  public:
   bool check(const Ts &...x) override { return this->parent_->is_running(); }
 };
 
-template<typename... Ts> class IsStoppedCondition : public Condition<Ts...>, public Parented<Speaker> {
+template<typename... Ts> class IsStoppedCondition final : public Condition<Ts...>, public Parented<Speaker> {
  public:
   bool check(const Ts &...x) override { return this->parent_->is_stopped(); }
 };
diff --git a/esphome/components/speaker/media_player/audio_pipeline.h b/esphome/components/speaker/media_player/audio_pipeline.h
index 89f4707ab3..02dad15de9 100644
--- a/esphome/components/speaker/media_player/audio_pipeline.h
+++ b/esphome/components/speaker/media_player/audio_pipeline.h
@@ -56,7 +56,7 @@ struct InfoErrorEvent {
   optional<DecodingError> decoding_err;
 };
 
-class AudioPipeline {
+class AudioPipeline final {
  public:
   /// @param speaker ESPHome speaker component for pipeline's audio output
   /// @param buffer_size Size of the buffer in bytes between the reader and decoder
diff --git a/esphome/components/speaker/media_player/automation.h b/esphome/components/speaker/media_player/automation.h
index 7843399866..f9e2127993 100644
--- a/esphome/components/speaker/media_player/automation.h
+++ b/esphome/components/speaker/media_player/automation.h
@@ -9,7 +9,8 @@
 
 namespace esphome::speaker {
 
-template<typename... Ts> class PlayOnDeviceMediaAction : public Action<Ts...>, public Parented<SpeakerMediaPlayer> {
+template<typename... Ts>
+class PlayOnDeviceMediaAction final : public Action<Ts...>, public Parented<SpeakerMediaPlayer> {
   TEMPLATABLE_VALUE(audio::AudioFile *, audio_file)
   TEMPLATABLE_VALUE(bool, announcement)
   TEMPLATABLE_VALUE(bool, enqueue)
diff --git a/esphome/components/speaker/media_player/speaker_media_player.h b/esphome/components/speaker/media_player/speaker_media_player.h
index 2d80377312..6470fb925c 100644
--- a/esphome/components/speaker/media_player/speaker_media_player.h
+++ b/esphome/components/speaker/media_player/speaker_media_player.h
@@ -42,11 +42,11 @@ struct VolumeRestoreState {
   bool is_muted;
 };
 
-class SpeakerMediaPlayer : public Component,
-                           public media_player::MediaPlayer
+class SpeakerMediaPlayer final : public Component,
+                                 public media_player::MediaPlayer
 #ifdef USE_OTA_STATE_LISTENER
     ,
-                           public ota::OTAGlobalStateListener
+                                 public ota::OTAGlobalStateListener
 #endif
 {
  public:
diff --git a/esphome/components/speaker_source/automation.h b/esphome/components/speaker_source/automation.h
index b436149a03..a03fa42477 100644
--- a/esphome/components/speaker_source/automation.h
+++ b/esphome/components/speaker_source/automation.h
@@ -9,7 +9,7 @@
 
 namespace esphome::speaker_source {
 
-template<typename... Ts> class SetPlaylistDelayAction : public Action<Ts...> {
+template<typename... Ts> class SetPlaylistDelayAction final : public Action<Ts...> {
  public:
   explicit SetPlaylistDelayAction(SpeakerSourceMediaPlayer *parent) : parent_(parent) {}
 
diff --git a/esphome/components/speaker_source/speaker_source_media_player.h b/esphome/components/speaker_source/speaker_source_media_player.h
index 652390edd2..ab1f8edfed 100644
--- a/esphome/components/speaker_source/speaker_source_media_player.h
+++ b/esphome/components/speaker_source/speaker_source_media_player.h
@@ -146,7 +146,7 @@ struct VolumeRestoreState {
   bool is_muted;
 };
 
-class SpeakerSourceMediaPlayer : public Component, public media_player::MediaPlayer {
+class SpeakerSourceMediaPlayer final : public Component, public media_player::MediaPlayer {
   friend struct SourceBinding;
 
  public:
diff --git a/esphome/components/speed/fan/speed_fan.h b/esphome/components/speed/fan/speed_fan.h
index c618d6bc5f..510b3e9621 100644
--- a/esphome/components/speed/fan/speed_fan.h
+++ b/esphome/components/speed/fan/speed_fan.h
@@ -7,7 +7,7 @@
 
 namespace esphome::speed {
 
-class SpeedFan : public Component, public fan::Fan {
+class SpeedFan final : public Component, public fan::Fan {
  public:
   SpeedFan(int speed_count) : speed_count_(speed_count) {}
   void setup() override;
diff --git a/esphome/components/spi/spi.h b/esphome/components/spi/spi.h
index e6f592c6e4..cada29b0d7 100644
--- a/esphome/components/spi/spi.h
+++ b/esphome/components/spi/spi.h
@@ -334,7 +334,7 @@ class SPIBus {
 
 class SPIClient;
 
-class SPIComponent : public Component {
+class SPIComponent final : public Component {
  public:
   SPIDelegate *register_device(SPIClient *device, SPIMode mode, SPIBitOrder bit_order, uint32_t data_rate,
                                GPIOPin *cs_pin, bool release_device, bool write_only);
diff --git a/esphome/components/spi_device/spi_device.h b/esphome/components/spi_device/spi_device.h
index 3a2523fbab..506090fc58 100644
--- a/esphome/components/spi_device/spi_device.h
+++ b/esphome/components/spi_device/spi_device.h
@@ -5,9 +5,9 @@
 
 namespace esphome::spi_device {
 
-class SPIDeviceComponent : public Component,
-                           public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
-                                                 spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_1MHZ> {
+class SPIDeviceComponent final : public Component,
+                                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                                       spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_1MHZ> {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/spi_led_strip/spi_led_strip.h b/esphome/components/spi_led_strip/spi_led_strip.h
index e2bcd5af63..20b9c25c2e 100644
--- a/esphome/components/spi_led_strip/spi_led_strip.h
+++ b/esphome/components/spi_led_strip/spi_led_strip.h
@@ -8,9 +8,9 @@
 namespace esphome::spi_led_strip {
 
 static const char *const TAG = "spi_led_strip";
-class SpiLedStrip : public light::AddressableLight,
-                    public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH, spi::CLOCK_PHASE_TRAILING,
-                                          spi::DATA_RATE_1MHZ> {
+class SpiLedStrip final : public light::AddressableLight,
+                          public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                                spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_1MHZ> {
  public:
   SpiLedStrip(uint16_t num_leds);
   void setup() override;
diff --git a/esphome/components/sprinkler/automation.h b/esphome/components/sprinkler/automation.h
index c6fe2e4e02..beeec96b98 100644
--- a/esphome/components/sprinkler/automation.h
+++ b/esphome/components/sprinkler/automation.h
@@ -6,7 +6,7 @@
 
 namespace esphome::sprinkler {
 
-template<typename... Ts> class SetDividerAction : public Action<Ts...> {
+template<typename... Ts> class SetDividerAction final : public Action<Ts...> {
  public:
   explicit SetDividerAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -18,7 +18,7 @@ template<typename... Ts> class SetDividerAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class SetMultiplierAction : public Action<Ts...> {
+template<typename... Ts> class SetMultiplierAction final : public Action<Ts...> {
  public:
   explicit SetMultiplierAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -30,7 +30,7 @@ template<typename... Ts> class SetMultiplierAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class QueueValveAction : public Action<Ts...> {
+template<typename... Ts> class QueueValveAction final : public Action<Ts...> {
  public:
   explicit QueueValveAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -46,7 +46,7 @@ template<typename... Ts> class QueueValveAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class ClearQueuedValvesAction : public Action<Ts...> {
+template<typename... Ts> class ClearQueuedValvesAction final : public Action<Ts...> {
  public:
   explicit ClearQueuedValvesAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -56,7 +56,7 @@ template<typename... Ts> class ClearQueuedValvesAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class SetRepeatAction : public Action<Ts...> {
+template<typename... Ts> class SetRepeatAction final : public Action<Ts...> {
  public:
   explicit SetRepeatAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -68,7 +68,7 @@ template<typename... Ts> class SetRepeatAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class SetRunDurationAction : public Action<Ts...> {
+template<typename... Ts> class SetRunDurationAction final : public Action<Ts...> {
  public:
   explicit SetRunDurationAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -84,7 +84,7 @@ template<typename... Ts> class SetRunDurationAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class StartFromQueueAction : public Action<Ts...> {
+template<typename... Ts> class StartFromQueueAction final : public Action<Ts...> {
  public:
   explicit StartFromQueueAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -94,7 +94,7 @@ template<typename... Ts> class StartFromQueueAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class StartFullCycleAction : public Action<Ts...> {
+template<typename... Ts> class StartFullCycleAction final : public Action<Ts...> {
  public:
   explicit StartFullCycleAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -104,7 +104,7 @@ template<typename... Ts> class StartFullCycleAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class StartSingleValveAction : public Action<Ts...> {
+template<typename... Ts> class StartSingleValveAction final : public Action<Ts...> {
  public:
   explicit StartSingleValveAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -122,7 +122,7 @@ template<typename... Ts> class StartSingleValveAction : public Action<Ts...> {
   TemplatableValue<size_t, Ts...> valve_to_start_{};
 };
 
-template<typename... Ts> class ShutdownAction : public Action<Ts...> {
+template<typename... Ts> class ShutdownAction final : public Action<Ts...> {
  public:
   explicit ShutdownAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -132,7 +132,7 @@ template<typename... Ts> class ShutdownAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class NextValveAction : public Action<Ts...> {
+template<typename... Ts> class NextValveAction final : public Action<Ts...> {
  public:
   explicit NextValveAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -142,7 +142,7 @@ template<typename... Ts> class NextValveAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class PreviousValveAction : public Action<Ts...> {
+template<typename... Ts> class PreviousValveAction final : public Action<Ts...> {
  public:
   explicit PreviousValveAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -152,7 +152,7 @@ template<typename... Ts> class PreviousValveAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class PauseAction : public Action<Ts...> {
+template<typename... Ts> class PauseAction final : public Action<Ts...> {
  public:
   explicit PauseAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -162,7 +162,7 @@ template<typename... Ts> class PauseAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class ResumeAction : public Action<Ts...> {
+template<typename... Ts> class ResumeAction final : public Action<Ts...> {
  public:
   explicit ResumeAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
@@ -172,7 +172,7 @@ template<typename... Ts> class ResumeAction : public Action<Ts...> {
   Sprinkler *sprinkler_;
 };
 
-template<typename... Ts> class ResumeOrStartAction : public Action<Ts...> {
+template<typename... Ts> class ResumeOrStartAction final : public Action<Ts...> {
  public:
   explicit ResumeOrStartAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
diff --git a/esphome/components/sprinkler/sprinkler.h b/esphome/components/sprinkler/sprinkler.h
index 2598a5606a..bd610f7ad3 100644
--- a/esphome/components/sprinkler/sprinkler.h
+++ b/esphome/components/sprinkler/sprinkler.h
@@ -70,7 +70,7 @@ struct SprinklerValve {
   std::unique_ptr<Automation<>> valve_turn_on_automation;
 };
 
-class SprinklerControllerNumber : public number::Number, public Component {
+class SprinklerControllerNumber final : public number::Number, public Component {
  public:
   void setup() override;
   void dump_config() override;
@@ -89,7 +89,7 @@ class SprinklerControllerNumber : public number::Number, public Component {
   ESPPreferenceObject pref_;
 };
 
-class SprinklerControllerSwitch : public switch_::Switch, public Component {
+class SprinklerControllerSwitch final : public switch_::Switch, public Component {
  public:
   SprinklerControllerSwitch();
 
@@ -173,7 +173,7 @@ class SprinklerValveRunRequest {
   SprinklerValveRunRequestOrigin origin_{USER};
 };
 
-class Sprinkler : public Component {
+class Sprinkler final : public Component {
  public:
   Sprinkler();
   Sprinkler(const char *name);
diff --git a/esphome/components/sps30/automation.h b/esphome/components/sps30/automation.h
index e58f857eb3..ba978e7770 100644
--- a/esphome/components/sps30/automation.h
+++ b/esphome/components/sps30/automation.h
@@ -6,17 +6,17 @@
 
 namespace esphome::sps30 {
 
-template<typename... Ts> class StartFanAction : public Action<Ts...>, public Parented<SPS30Component> {
+template<typename... Ts> class StartFanAction final : public Action<Ts...>, public Parented<SPS30Component> {
  public:
   void play(const Ts &...x) override { this->parent_->start_fan_cleaning(); }
 };
 
-template<typename... Ts> class StartMeasurementAction : public Action<Ts...>, public Parented<SPS30Component> {
+template<typename... Ts> class StartMeasurementAction final : public Action<Ts...>, public Parented<SPS30Component> {
  public:
   void play(const Ts &...x) override { this->parent_->start_measurement(); }
 };
 
-template<typename... Ts> class StopMeasurementAction : public Action<Ts...>, public Parented<SPS30Component> {
+template<typename... Ts> class StopMeasurementAction final : public Action<Ts...>, public Parented<SPS30Component> {
  public:
   void play(const Ts &...x) override { this->parent_->stop_measurement(); }
 };
diff --git a/esphome/components/sps30/sps30.h b/esphome/components/sps30/sps30.h
index ccb3e8ff41..10b89c844b 100644
--- a/esphome/components/sps30/sps30.h
+++ b/esphome/components/sps30/sps30.h
@@ -8,7 +8,7 @@ namespace esphome::sps30 {
 
 /// This class implements support for the Sensirion SPS30 i2c/UART Particulate Matter
 /// PM1.0, PM2.5, PM4, PM10 Air Quality sensors.
-class SPS30Component : public PollingComponent, public sensirion_common::SensirionI2CDevice {
+class SPS30Component final : public PollingComponent, public sensirion_common::SensirionI2CDevice {
  public:
   void set_pm_1_0_sensor(sensor::Sensor *pm_1_0) { pm_1_0_sensor_ = pm_1_0; }
   void set_pm_2_5_sensor(sensor::Sensor *pm_2_5) { pm_2_5_sensor_ = pm_2_5; }
diff --git a/esphome/components/ssd1306_i2c/ssd1306_i2c.h b/esphome/components/ssd1306_i2c/ssd1306_i2c.h
index 0316da0e77..54c7d86287 100644
--- a/esphome/components/ssd1306_i2c/ssd1306_i2c.h
+++ b/esphome/components/ssd1306_i2c/ssd1306_i2c.h
@@ -6,7 +6,7 @@
 
 namespace esphome::ssd1306_i2c {
 
-class I2CSSD1306 : public ssd1306_base::SSD1306, public i2c::I2CDevice {
+class I2CSSD1306 final : public ssd1306_base::SSD1306, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/ssd1306_spi/ssd1306_spi.h b/esphome/components/ssd1306_spi/ssd1306_spi.h
index f8346033b3..948d099d0f 100644
--- a/esphome/components/ssd1306_spi/ssd1306_spi.h
+++ b/esphome/components/ssd1306_spi/ssd1306_spi.h
@@ -6,9 +6,9 @@
 
 namespace esphome::ssd1306_spi {
 
-class SPISSD1306 : public ssd1306_base::SSD1306,
-                   public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH, spi::CLOCK_PHASE_TRAILING,
-                                         spi::DATA_RATE_8MHZ> {
+class SPISSD1306 final : public ssd1306_base::SSD1306,
+                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                               spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_8MHZ> {
  public:
   void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }
 
diff --git a/esphome/components/ssd1322_spi/ssd1322_spi.h b/esphome/components/ssd1322_spi/ssd1322_spi.h
index 31d17d0ef1..1ac9654109 100644
--- a/esphome/components/ssd1322_spi/ssd1322_spi.h
+++ b/esphome/components/ssd1322_spi/ssd1322_spi.h
@@ -6,9 +6,9 @@
 
 namespace esphome::ssd1322_spi {
 
-class SPISSD1322 : public ssd1322_base::SSD1322,
-                   public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH, spi::CLOCK_PHASE_TRAILING,
-                                         spi::DATA_RATE_8MHZ> {
+class SPISSD1322 final : public ssd1322_base::SSD1322,
+                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                               spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_8MHZ> {
  public:
   void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }
 
diff --git a/esphome/components/ssd1325_spi/ssd1325_spi.h b/esphome/components/ssd1325_spi/ssd1325_spi.h
index 32cbb28fd8..3202eabec5 100644
--- a/esphome/components/ssd1325_spi/ssd1325_spi.h
+++ b/esphome/components/ssd1325_spi/ssd1325_spi.h
@@ -6,9 +6,9 @@
 
 namespace esphome::ssd1325_spi {
 
-class SPISSD1325 : public ssd1325_base::SSD1325,
-                   public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH, spi::CLOCK_PHASE_TRAILING,
-                                         spi::DATA_RATE_8MHZ> {
+class SPISSD1325 final : public ssd1325_base::SSD1325,
+                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                               spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_8MHZ> {
  public:
   void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }
 
diff --git a/esphome/components/ssd1327_i2c/ssd1327_i2c.h b/esphome/components/ssd1327_i2c/ssd1327_i2c.h
index f08ef94fef..75f854d3da 100644
--- a/esphome/components/ssd1327_i2c/ssd1327_i2c.h
+++ b/esphome/components/ssd1327_i2c/ssd1327_i2c.h
@@ -6,7 +6,7 @@
 
 namespace esphome::ssd1327_i2c {
 
-class I2CSSD1327 : public ssd1327_base::SSD1327, public i2c::I2CDevice {
+class I2CSSD1327 final : public ssd1327_base::SSD1327, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/ssd1327_spi/ssd1327_spi.h b/esphome/components/ssd1327_spi/ssd1327_spi.h
index fd1ed0357f..cb7d5e2181 100644
--- a/esphome/components/ssd1327_spi/ssd1327_spi.h
+++ b/esphome/components/ssd1327_spi/ssd1327_spi.h
@@ -6,9 +6,9 @@
 
 namespace esphome::ssd1327_spi {
 
-class SPISSD1327 : public ssd1327_base::SSD1327,
-                   public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH, spi::CLOCK_PHASE_TRAILING,
-                                         spi::DATA_RATE_8MHZ> {
+class SPISSD1327 final : public ssd1327_base::SSD1327,
+                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                               spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_8MHZ> {
  public:
   void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }
 
diff --git a/esphome/components/ssd1331_spi/ssd1331_spi.h b/esphome/components/ssd1331_spi/ssd1331_spi.h
index acdc004b26..add010712c 100644
--- a/esphome/components/ssd1331_spi/ssd1331_spi.h
+++ b/esphome/components/ssd1331_spi/ssd1331_spi.h
@@ -6,9 +6,9 @@
 
 namespace esphome::ssd1331_spi {
 
-class SPISSD1331 : public ssd1331_base::SSD1331,
-                   public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH, spi::CLOCK_PHASE_TRAILING,
-                                         spi::DATA_RATE_8MHZ> {
+class SPISSD1331 final : public ssd1331_base::SSD1331,
+                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                               spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_8MHZ> {
  public:
   void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }