diff --git a/homeassistant/components/sonos/entity.py b/homeassistant/components/sonos/entity.py
index bd7256493e8..98dc8b8b752 100644
--- a/homeassistant/components/sonos/entity.py
+++ b/homeassistant/components/sonos/entity.py
@@ -85,6 +85,7 @@ class SonosEntity(Entity):
             identifiers={(DOMAIN, self.soco.uid)},
             name=self.speaker.zone_name,
             model=self.speaker.model_name.replace("Sonos ", ""),
+            model_id=self.speaker.model_number,
             sw_version=self.speaker.version,
             connections={
                 (dr.CONNECTION_NETWORK_MAC, self.speaker.mac_address),
diff --git a/tests/components/sonos/test_media_player.py b/tests/components/sonos/test_media_player.py
index ae3928c5ff6..9887601a0a3 100644
--- a/tests/components/sonos/test_media_player.py
+++ b/tests/components/sonos/test_media_player.py
@@ -72,6 +72,7 @@ async def test_device_registry(
     )
     assert reg_device is not None
     assert reg_device.model == "Model Name"
+    assert reg_device.model_id == "S12"
     assert reg_device.sw_version == "13.1"
     assert reg_device.connections == {
         (CONNECTION_NETWORK_MAC, "00:11:22:33:44:55"),