diff --git a/esphome/core/application.h b/esphome/core/application.h
index 9892e27022..4baf24cd9d 100644
--- a/esphome/core/application.h
+++ b/esphome/core/application.h
@@ -643,6 +643,12 @@ class Application {
 #endif
 #endif
 
+#if defined(USE_ESP8266) && defined(USE_SOCKET_IMPL_LWIP_TCP)
+  /// Wake the main event loop from any context (ISR, thread, or main loop).
+  /// On ESP8266: sets the socket wake flag and calls esp_schedule() to exit esp_delay() early.
+  static void IRAM_ATTR wake_loop_any_context() { socket::socket_wake(); }
+#endif
+
  protected:
   friend Component;
   friend class socket::Socket;