diff --git a/esphome/components/mqtt/__init__.py b/esphome/components/mqtt/__init__.py
index 3f9275e231..7207eaddc1 100644
--- a/esphome/components/mqtt/__init__.py
+++ b/esphome/components/mqtt/__init__.py
@@ -250,6 +250,7 @@ CONFIG_SCHEMA = cv.All(
         }
     ),
     validate_config,
+    cv.only_on(["esp32", "esp8266"]),
 )