diff --git a/tests/common.py b/tests/common.py
index c5b517f78ac..738183a3f87 100644
--- a/tests/common.py
+++ b/tests/common.py
@@ -2,7 +2,6 @@
 from __future__ import annotations
 
 import asyncio
-from collections import OrderedDict
 from collections.abc import AsyncGenerator, Generator, Mapping, Sequence
 from contextlib import asynccontextmanager, contextmanager
 from datetime import UTC, datetime, timedelta
@@ -618,27 +617,6 @@ def mock_registry(
     return registry
 
 
-def mock_area_registry(
-    hass: HomeAssistant, mock_entries: dict[str, ar.AreaEntry] | None = None
-) -> ar.AreaRegistry:
-    """Mock the Area Registry.
-
-    This should only be used if you need to mock/re-stage a clean mocked
-    area registry in your current hass object. It can be useful to,
-    for example, pre-load the registry with items.
-
-    This mock will thus replace the existing registry in the running hass.
-
-    If you just need to access the existing registry, use the `area_registry`
-    fixture instead.
-    """
-    registry = ar.AreaRegistry(hass)
-    registry.areas = mock_entries or OrderedDict()
-
-    hass.data[ar.DATA_REGISTRY] = registry
-    return registry
-
-
 def mock_device_registry(
     hass: HomeAssistant,
     mock_entries: dict[str, dr.DeviceEntry] | None = None,