diff --git a/homeassistant/components/twinkly/icons.json b/homeassistant/components/twinkly/icons.json
new file mode 100644
index 00000000000..82c95aebce6
--- /dev/null
+++ b/homeassistant/components/twinkly/icons.json
@@ -0,0 +1,9 @@
+{
+  "entity": {
+    "light": {
+      "light": {
+        "default": "mdi:string-lights"
+      }
+    }
+  }
+}
diff --git a/homeassistant/components/twinkly/light.py b/homeassistant/components/twinkly/light.py
index 453ba900706..35b5f8bd1d3 100644
--- a/homeassistant/components/twinkly/light.py
+++ b/homeassistant/components/twinkly/light.py
@@ -66,7 +66,7 @@ class TwinklyLight(LightEntity):
 
     _attr_has_entity_name = True
     _attr_name = None
-    _attr_icon = "mdi:string-lights"
+    _attr_translation_key = "light"
 
     def __init__(
         self,
diff --git a/tests/components/twinkly/snapshots/test_diagnostics.ambr b/tests/components/twinkly/snapshots/test_diagnostics.ambr
index 2a10154c3da..0601159ca4c 100644
--- a/tests/components/twinkly/snapshots/test_diagnostics.ambr
+++ b/tests/components/twinkly/snapshots/test_diagnostics.ambr
@@ -8,7 +8,6 @@
       'effect_list': list([
       ]),
       'friendly_name': 'twinkly_test_device_name',
-      'icon': 'mdi:string-lights',
       'supported_color_modes': list([
         'brightness',
       ]),
diff --git a/tests/components/twinkly/test_light.py b/tests/components/twinkly/test_light.py
index 452467bb160..976744ff5db 100644
--- a/tests/components/twinkly/test_light.py
+++ b/tests/components/twinkly/test_light.py
@@ -30,9 +30,6 @@ async def test_initial_state(hass: HomeAssistant) -> None:
     assert state.state == "on"
     assert state.attributes[ATTR_BRIGHTNESS] == 26
     assert state.attributes["friendly_name"] == TEST_NAME
-    assert state.attributes["icon"] == "mdi:string-lights"
-
-    assert entity.original_icon == "mdi:string-lights"
 
     assert device.name == TEST_NAME
     assert device.model == TEST_MODEL