diff --git a/homeassistant/components/config/floor_registry.py b/homeassistant/components/config/floor_registry.py
index 893f97c567d..081ec59e268 100644
--- a/homeassistant/components/config/floor_registry.py
+++ b/homeassistant/components/config/floor_registry.py
@@ -41,6 +41,7 @@ def websocket_list_floors(
     {
         vol.Required("type"): "config/floor_registry/create",
         vol.Required("name"): str,
+        vol.Optional("aliases"): list,
         vol.Optional("icon"): vol.Any(str, None),
         vol.Optional("level"): int,
     }
@@ -57,6 +58,10 @@ def websocket_create_floor(
     data.pop("type")
     data.pop("id")
 
+    if "aliases" in data:
+        # Convert aliases to a set
+        data["aliases"] = set(data["aliases"])
+
     try:
         entry = registry.async_create(**data)
     except ValueError as err:
@@ -91,6 +96,7 @@ def websocket_delete_floor(
     {
         vol.Required("type"): "config/floor_registry/update",
         vol.Required("floor_id"): str,
+        vol.Optional("aliases"): list,
         vol.Optional("icon"): vol.Any(str, None),
         vol.Optional("level"): int,
         vol.Optional("name"): str,
@@ -108,6 +114,10 @@ def websocket_update_floor(
     data.pop("type")
     data.pop("id")
 
+    if "aliases" in data:
+        # Convert aliases to a set
+        data["aliases"] = set(data["aliases"])
+
     try:
         entry = registry.async_update(**data)
     except ValueError as err:
@@ -120,6 +130,7 @@ def websocket_update_floor(
 def _entry_dict(entry: FloorEntry) -> dict[str, Any]:
     """Convert entry to API format."""
     return {
+        "aliases": list(entry.aliases),
         "floor_id": entry.floor_id,
         "icon": entry.icon,
         "level": entry.level,
diff --git a/tests/components/config/test_floor_registry.py b/tests/components/config/test_floor_registry.py
index a3866c88ffa..781c6181118 100644
--- a/tests/components/config/test_floor_registry.py
+++ b/tests/components/config/test_floor_registry.py
@@ -1,6 +1,7 @@
 """Test floor registry API."""
 
 import pytest
+from pytest_unordered import unordered
 
 from homeassistant.components.config import floor_registry
 from homeassistant.core import HomeAssistant
@@ -26,6 +27,7 @@ async def test_list_floors(
     floor_registry.async_create("First floor")
     floor_registry.async_create(
         name="Second floor",
+        aliases={"top floor", "attic"},
         icon="mdi:home-floor-2",
         level=2,
     )
@@ -38,12 +40,14 @@ async def test_list_floors(
 
     assert len(msg["result"]) == len(floor_registry.floors)
     assert msg["result"][0] == {
+        "aliases": [],
         "icon": None,
         "floor_id": "first_floor",
         "name": "First floor",
         "level": 0,
     }
     assert msg["result"][1] == {
+        "aliases": unordered(["top floor", "attic"]),
         "icon": "mdi:home-floor-2",
         "floor_id": "second_floor",
         "name": "Second floor",
@@ -64,6 +68,7 @@ async def test_create_floor(
 
     assert len(floor_registry.floors) == 1
     assert msg["result"] == {
+        "aliases": [],
         "icon": None,
         "floor_id": "first_floor",
         "name": "First floor",
@@ -74,6 +79,7 @@ async def test_create_floor(
         {
             "name": "Second floor",
             "type": "config/floor_registry/create",
+            "aliases": ["top floor", "attic"],
             "icon": "mdi:home-floor-2",
             "level": 2,
         }
@@ -83,6 +89,7 @@ async def test_create_floor(
 
     assert len(floor_registry.floors) == 2
     assert msg["result"] == {
+        "aliases": unordered(["top floor", "attic"]),
         "icon": "mdi:home-floor-2",
         "floor_id": "second_floor",
         "name": "Second floor",
@@ -165,6 +172,7 @@ async def test_update_floor(
         {
             "floor_id": floor.floor_id,
             "name": "Second floor",
+            "aliases": ["top floor", "attic"],
             "icon": "mdi:home-floor-2",
             "type": "config/floor_registry/update",
             "level": 2,
@@ -175,6 +183,7 @@ async def test_update_floor(
 
     assert len(floor_registry.floors) == 1
     assert msg["result"] == {
+        "aliases": unordered(["top floor", "attic"]),
         "icon": "mdi:home-floor-2",
         "floor_id": floor.floor_id,
         "name": "Second floor",
@@ -185,6 +194,7 @@ async def test_update_floor(
         {
             "floor_id": floor.floor_id,
             "name": "First floor",
+            "aliases": [],
             "icon": None,
             "level": 1,
             "type": "config/floor_registry/update",
@@ -195,6 +205,7 @@ async def test_update_floor(
 
     assert len(floor_registry.floors) == 1
     assert msg["result"] == {
+        "aliases": [],
         "icon": None,
         "floor_id": floor.floor_id,
         "name": "First floor",