diff --git a/homeassistant/components/frontend/services.yaml b/homeassistant/components/frontend/services.yaml
index 2a562ab348a..0cc88baf32f 100644
--- a/homeassistant/components/frontend/services.yaml
+++ b/homeassistant/components/frontend/services.yaml
@@ -11,6 +11,7 @@ set_theme:
       example: "default"
       selector:
         theme:
+          include_default: true
     mode:
       name: Mode
       description: The mode the theme is for.
diff --git a/homeassistant/helpers/selector.py b/homeassistant/helpers/selector.py
index 61ac81b0bca..c7087918cf0 100644
--- a/homeassistant/helpers/selector.py
+++ b/homeassistant/helpers/selector.py
@@ -1201,7 +1201,11 @@ class ThemeSelector(Selector[ThemeSelectorConfig]):
 
     selector_type = "theme"
 
-    CONFIG_SCHEMA = vol.Schema({})
+    CONFIG_SCHEMA = vol.Schema(
+        {
+            vol.Optional("include_default", default=False): cv.boolean,
+        }
+    )
 
     def __init__(self, config: ThemeSelectorConfig | None = None) -> None:
         """Instantiate a selector."""
diff --git a/tests/helpers/test_selector.py b/tests/helpers/test_selector.py
index 10dc825372f..c1d5f76ea78 100644
--- a/tests/helpers/test_selector.py
+++ b/tests/helpers/test_selector.py
@@ -747,6 +747,11 @@ def test_icon_selector_schema(schema, valid_selections, invalid_selections) -> N
             ("abc",),
             (None,),
         ),
+        (
+            {"include_default": True},
+            ("abc",),
+            (None,),
+        ),
     ),
 )
 def test_theme_selector_schema(schema, valid_selections, invalid_selections) -> None: