diff --git a/esphome/components/api/api_pb2.cpp b/esphome/components/api/api_pb2.cpp
index 4b86baf2c1d..829dd56d0a9 100644
--- a/esphome/components/api/api_pb2.cpp
+++ b/esphome/components/api/api_pb2.cpp
@@ -745,8 +745,9 @@ uint32_t ListEntitiesSensorResponse::calculate_size() const {
 #endif
   return size;
 }
-__attribute__((optimize("O2"))) uint8_t *SensorStateResponse::encode(
-    ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {
+__attribute__((optimize("O2")))  // NOLINT(clang-diagnostic-unknown-attributes)
+uint8_t *
+SensorStateResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {
   uint8_t *__restrict__ pos = buffer.get_pos();
   ProtoEncode::write_tag_and_fixed32(pos PROTO_ENCODE_DEBUG_ARG, 13, this->key);
   ProtoEncode::encode_float(pos PROTO_ENCODE_DEBUG_ARG, 2, this->state);
@@ -756,7 +757,9 @@ __attribute__((optimize("O2"))) uint8_t *SensorStateResponse::encode(
 #endif
   return pos;
 }
-__attribute__((optimize("O2"))) uint32_t SensorStateResponse::calculate_size() const {
+__attribute__((optimize("O2")))  // NOLINT(clang-diagnostic-unknown-attributes)
+uint32_t
+SensorStateResponse::calculate_size() const {
   uint32_t size = 0;
   size += 5;
   size += ProtoSize::calc_float(1, this->state);
@@ -2325,8 +2328,9 @@ bool SubscribeBluetoothLEAdvertisementsRequest::decode_varint(uint32_t field_id,
   }
   return true;
 }
-__attribute__((optimize("O2"))) uint8_t *BluetoothLERawAdvertisementsResponse::encode(
-    ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {
+__attribute__((optimize("O2")))  // NOLINT(clang-diagnostic-unknown-attributes)
+uint8_t *
+BluetoothLERawAdvertisementsResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {
   uint8_t *__restrict__ pos = buffer.get_pos();
   for (uint16_t i = 0; i < this->advertisements_len; i++) {
     auto &sub_msg = this->advertisements[i];
@@ -2348,7 +2352,9 @@ __attribute__((optimize("O2"))) uint8_t *BluetoothLERawAdvertisementsResponse::e
   }
   return pos;
 }
-__attribute__((optimize("O2"))) uint32_t BluetoothLERawAdvertisementsResponse::calculate_size() const {
+__attribute__((optimize("O2")))  // NOLINT(clang-diagnostic-unknown-attributes)
+uint32_t
+BluetoothLERawAdvertisementsResponse::calculate_size() const {
   uint32_t size = 0;
   for (uint16_t i = 0; i < this->advertisements_len; i++) {
     auto &sub_msg = this->advertisements[i];
diff --git a/script/api_protobuf/api_protobuf.py b/script/api_protobuf/api_protobuf.py
index 4f52b07809b..a58474f9fe9 100755
--- a/script/api_protobuf/api_protobuf.py
+++ b/script/api_protobuf/api_protobuf.py
@@ -2683,7 +2683,7 @@ def build_message_type(
     # When set, __attribute__((optimize("O2"))) is added to the definitions
     # so GCC inlines the small ProtoEncode helpers even under -Os.
     is_speed_optimized = get_opt(desc, pb.speed_optimized, False)
-    speed_attr = '__attribute__((optimize("O2"))) ' if is_speed_optimized else ""
+    speed_attr = '__attribute__((optimize("O2")))  // NOLINT(clang-diagnostic-unknown-attributes)\n' if is_speed_optimized else ""
 
     # Only generate encode method if this message needs encoding and has fields
     if needs_encode and encode and not is_inline_only: