diff --git a/homeassistant/components/fritzbox/coordinator.py b/homeassistant/components/fritzbox/coordinator.py
index adc63dd2c2e..8a37ebf63e4 100644
--- a/homeassistant/components/fritzbox/coordinator.py
+++ b/homeassistant/components/fritzbox/coordinator.py
@@ -92,7 +92,7 @@ class FritzboxDataUpdateCoordinator(DataUpdateCoordinator[FritzboxCoordinatorDat
 
         available_main_ains = [
             ain
-            for ain, dev in data.devices.items()
+            for ain, dev in data.devices.items() | data.templates.items()
             if dev.device_and_unit_id[1] is None
         ]
         device_reg = dr.async_get(self.hass)
diff --git a/tests/components/fritzbox/test_coordinator.py b/tests/components/fritzbox/test_coordinator.py
index f4f4da90181..4c329daa640 100644
--- a/tests/components/fritzbox/test_coordinator.py
+++ b/tests/components/fritzbox/test_coordinator.py
@@ -15,7 +15,7 @@ from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry as dr, entity_registry as er
 from homeassistant.util.dt import utcnow
 
-from . import FritzDeviceCoverMock, FritzDeviceSwitchMock
+from . import FritzDeviceCoverMock, FritzDeviceSwitchMock, FritzEntityBaseMock
 from .const import MOCK_CONFIG
 
 from tests.common import MockConfigEntry, async_fire_time_changed
@@ -84,6 +84,8 @@ async def test_coordinator_automatic_registry_cleanup(
     entity_registry: er.EntityRegistry,
 ) -> None:
     """Test automatic registry cleanup."""
+
+    # init with 2 devices and 1 template
     fritz().get_devices.return_value = [
         FritzDeviceSwitchMock(
             ain="fake ain switch",
@@ -96,6 +98,13 @@ async def test_coordinator_automatic_registry_cleanup(
             name="fake_cover",
         ),
     ]
+    fritz().get_templates.return_value = [
+        FritzEntityBaseMock(
+            ain="fake ain template",
+            device_and_unit_id=("fake ain template", None),
+            name="fake_template",
+        )
+    ]
     entry = MockConfigEntry(
         domain=FB_DOMAIN,
         data=MOCK_CONFIG[FB_DOMAIN][CONF_DEVICES][0],
@@ -105,9 +114,10 @@ async def test_coordinator_automatic_registry_cleanup(
     await hass.config_entries.async_setup(entry.entry_id)
     await hass.async_block_till_done(wait_background_tasks=True)
 
-    assert len(er.async_entries_for_config_entry(entity_registry, entry.entry_id)) == 19
-    assert len(dr.async_entries_for_config_entry(device_registry, entry.entry_id)) == 2
+    assert len(er.async_entries_for_config_entry(entity_registry, entry.entry_id)) == 20
+    assert len(dr.async_entries_for_config_entry(device_registry, entry.entry_id)) == 3
 
+    # remove one device, keep the template
     fritz().get_devices.return_value = [
         FritzDeviceSwitchMock(
             ain="fake ain switch",
@@ -119,5 +129,14 @@ async def test_coordinator_automatic_registry_cleanup(
     async_fire_time_changed(hass, utcnow() + timedelta(seconds=35))
     await hass.async_block_till_done(wait_background_tasks=True)
 
+    assert len(er.async_entries_for_config_entry(entity_registry, entry.entry_id)) == 13
+    assert len(dr.async_entries_for_config_entry(device_registry, entry.entry_id)) == 2
+
+    # remove the template, keep the device
+    fritz().get_templates.return_value = []
+
+    async_fire_time_changed(hass, utcnow() + timedelta(seconds=35))
+    await hass.async_block_till_done(wait_background_tasks=True)
+
     assert len(er.async_entries_for_config_entry(entity_registry, entry.entry_id)) == 12
     assert len(dr.async_entries_for_config_entry(device_registry, entry.entry_id)) == 1