diff --git a/tests/components/knx/test_device_trigger.py b/tests/components/knx/test_device_trigger.py
index 278267c4f8a..2fd15150503 100644
--- a/tests/components/knx/test_device_trigger.py
+++ b/tests/components/knx/test_device_trigger.py
@@ -397,7 +397,7 @@ async def test_invalid_trigger_configuration(
     hass: HomeAssistant,
     device_registry: dr.DeviceRegistry,
     knx: KNXTestKit,
-):
+) -> None:
     """Test invalid telegram device trigger configuration at attach_trigger."""
     await knx.setup_integration({})
     device_entry = device_registry.async_get_device(
diff --git a/tests/components/knx/test_telegrams.py b/tests/components/knx/test_telegrams.py
index 844fc073d61..4d72a9583a1 100644
--- a/tests/components/knx/test_telegrams.py
+++ b/tests/components/knx/test_telegrams.py
@@ -66,7 +66,7 @@ async def test_store_telegam_history(
     hass: HomeAssistant,
     knx: KNXTestKit,
     hass_storage: dict[str, Any],
-):
+) -> None:
     """Test storing telegram history."""
     await knx.setup_integration({})
 
@@ -89,7 +89,7 @@ async def test_load_telegam_history(
     hass: HomeAssistant,
     knx: KNXTestKit,
     hass_storage: dict[str, Any],
-):
+) -> None:
     """Test telegram history restoration."""
     hass_storage["knx/telegrams_history.json"] = {"version": 1, "data": MOCK_TELEGRAMS}
     await knx.setup_integration({})
@@ -103,7 +103,7 @@ async def test_remove_telegam_history(
     hass: HomeAssistant,
     knx: KNXTestKit,
     hass_storage: dict[str, Any],
-):
+) -> None:
     """Test telegram history removal when configured to size 0."""
     hass_storage["knx/telegrams_history.json"] = {"version": 1, "data": MOCK_TELEGRAMS}
     knx.mock_config_entry.add_to_hass(hass)
diff --git a/tests/components/knx/test_websocket.py b/tests/components/knx/test_websocket.py
index 78cbb98a7a0..ca60905b0ba 100644
--- a/tests/components/knx/test_websocket.py
+++ b/tests/components/knx/test_websocket.py
@@ -14,7 +14,7 @@ from tests.typing import WebSocketGenerator
 
 async def test_knx_info_command(
     hass: HomeAssistant, knx: KNXTestKit, hass_ws_client: WebSocketGenerator
-):
+) -> None:
     """Test knx/info command."""
     await knx.setup_integration({})
     client = await hass_ws_client(hass)
@@ -33,7 +33,7 @@ async def test_knx_info_command_with_project(
     knx: KNXTestKit,
     hass_ws_client: WebSocketGenerator,
     load_knxproj: None,
-):
+) -> None:
     """Test knx/info command with loaded project."""
     await knx.setup_integration({})
     client = await hass_ws_client(hass)
@@ -55,7 +55,7 @@ async def test_knx_project_file_process(
     knx: KNXTestKit,
     hass_ws_client: WebSocketGenerator,
     hass_storage: dict[str, Any],
-):
+) -> None:
     """Test knx/project_file_process command for storing and loading new data."""
     _file_id = "1234"
     _password = "pw-test"
@@ -93,7 +93,7 @@ async def test_knx_project_file_process_error(
     hass: HomeAssistant,
     knx: KNXTestKit,
     hass_ws_client: WebSocketGenerator,
-):
+) -> None:
     """Test knx/project_file_process exception handling."""
     await knx.setup_integration({})
     client = await hass_ws_client(hass)
@@ -126,7 +126,7 @@ async def test_knx_project_file_remove(
     knx: KNXTestKit,
     hass_ws_client: WebSocketGenerator,
     load_knxproj: None,
-):
+) -> None:
     """Test knx/project_file_remove command."""
     await knx.setup_integration({})
     client = await hass_ws_client(hass)
@@ -146,7 +146,7 @@ async def test_knx_get_project(
     knx: KNXTestKit,
     hass_ws_client: WebSocketGenerator,
     load_knxproj: None,
-):
+) -> None:
     """Test retrieval of kxnproject from store."""
     await knx.setup_integration({})
     client = await hass_ws_client(hass)
@@ -161,7 +161,7 @@ async def test_knx_get_project(
 
 async def test_knx_group_monitor_info_command(
     hass: HomeAssistant, knx: KNXTestKit, hass_ws_client: WebSocketGenerator
-):
+) -> None:
     """Test knx/group_monitor_info command."""
     await knx.setup_integration({})
     client = await hass_ws_client(hass)
@@ -176,7 +176,7 @@ async def test_knx_group_monitor_info_command(
 
 async def test_knx_subscribe_telegrams_command_recent_telegrams(
     hass: HomeAssistant, knx: KNXTestKit, hass_ws_client: WebSocketGenerator
-):
+) -> None:
     """Test knx/subscribe_telegrams command sending recent telegrams."""
     await knx.setup_integration(
         {
@@ -224,7 +224,7 @@ async def test_knx_subscribe_telegrams_command_recent_telegrams(
 
 async def test_knx_subscribe_telegrams_command_no_project(
     hass: HomeAssistant, knx: KNXTestKit, hass_ws_client: WebSocketGenerator
-):
+) -> None:
     """Test knx/subscribe_telegrams command without project data."""
     await knx.setup_integration(
         {
@@ -299,7 +299,7 @@ async def test_knx_subscribe_telegrams_command_project(
     knx: KNXTestKit,
     hass_ws_client: WebSocketGenerator,
     load_knxproj: None,
-):
+) -> None:
     """Test knx/subscribe_telegrams command with project data."""
     await knx.setup_integration({})
     client = await hass_ws_client(hass)
diff --git a/tests/components/lg_netcast/test_config_flow.py b/tests/components/lg_netcast/test_config_flow.py
index c159b8fb9d2..2ecbadbaf44 100644
--- a/tests/components/lg_netcast/test_config_flow.py
+++ b/tests/components/lg_netcast/test_config_flow.py
@@ -187,7 +187,7 @@ async def test_import_not_online(hass: HomeAssistant) -> None:
         assert result["reason"] == "cannot_connect"
 
 
-async def test_import_duplicate_error(hass):
+async def test_import_duplicate_error(hass: HomeAssistant) -> None:
     """Test that errors are shown when duplicates are added during import."""
     config_entry = MockConfigEntry(
         domain=DOMAIN,
@@ -217,7 +217,7 @@ async def test_import_duplicate_error(hass):
         assert result["reason"] == "already_configured"
 
 
-async def test_display_access_token_aborted(hass: HomeAssistant):
+async def test_display_access_token_aborted(hass: HomeAssistant) -> None:
     """Test Access token display is cancelled."""
 
     def _async_track_time_interval(
diff --git a/tests/components/lg_netcast/test_trigger.py b/tests/components/lg_netcast/test_trigger.py
index f448c08ffd0..b0c2a86ec21 100644
--- a/tests/components/lg_netcast/test_trigger.py
+++ b/tests/components/lg_netcast/test_trigger.py
@@ -79,7 +79,7 @@ async def test_lg_netcast_turn_on_trigger_device_id(
 
 async def test_lg_netcast_turn_on_trigger_entity_id(
     hass: HomeAssistant, calls: list[ServiceCall]
-):
+) -> None:
     """Test for turn_on triggers by entity firing."""
     await setup_lgnetcast(hass)
 
diff --git a/tests/components/local_calendar/test_calendar.py b/tests/components/local_calendar/test_calendar.py
index 2fa0063dfd8..61908faeca6 100644
--- a/tests/components/local_calendar/test_calendar.py
+++ b/tests/components/local_calendar/test_calendar.py
@@ -785,7 +785,7 @@ async def test_all_day_iter_order(
     setup_integration: None,
     get_events: GetEventsFn,
     event_order: list[str],
-):
+) -> None:
     """Test the sort order of an all day events depending on the time zone."""
     client = await ws_client()
     await client.cmd_result(
diff --git a/tests/components/logbook/test_models.py b/tests/components/logbook/test_models.py
index 459fd0e06c9..7021711014f 100644
--- a/tests/components/logbook/test_models.py
+++ b/tests/components/logbook/test_models.py
@@ -5,7 +5,7 @@ from unittest.mock import Mock
 from homeassistant.components.logbook.models import LazyEventPartialState
 
 
-def test_lazy_event_partial_state_context():
+def test_lazy_event_partial_state_context() -> None:
     """Test we can extract context from a lazy event partial state."""
     state = LazyEventPartialState(
         Mock(
diff --git a/tests/components/loqed/test_init.py b/tests/components/loqed/test_init.py
index ef05f2b757a..ed38b63fdb1 100644
--- a/tests/components/loqed/test_init.py
+++ b/tests/components/loqed/test_init.py
@@ -42,7 +42,7 @@ async def test_webhook_accepts_valid_message(
 
 async def test_setup_webhook_in_bridge(
     hass: HomeAssistant, config_entry: MockConfigEntry, lock: loqed.Lock
-):
+) -> None:
     """Test webhook setup in loqed bridge."""
     config: dict[str, Any] = {DOMAIN: {}}
     config_entry.add_to_hass(hass)
@@ -65,7 +65,7 @@ async def test_setup_webhook_in_bridge(
 
 async def test_cannot_connect_to_bridge_will_retry(
     hass: HomeAssistant, config_entry: MockConfigEntry, lock: loqed.Lock
-):
+) -> None:
     """Test webhook setup in loqed bridge."""
     config: dict[str, Any] = {DOMAIN: {}}
     config_entry.add_to_hass(hass)
@@ -81,7 +81,7 @@ async def test_cannot_connect_to_bridge_will_retry(
 
 async def test_setup_cloudhook_in_bridge(
     hass: HomeAssistant, config_entry: MockConfigEntry, lock: loqed.Lock
-):
+) -> None:
     """Test webhook setup in loqed bridge."""
     config: dict[str, Any] = {DOMAIN: {}}
     config_entry.add_to_hass(hass)
@@ -112,7 +112,7 @@ async def test_setup_cloudhook_in_bridge(
 
 async def test_setup_cloudhook_from_entry_in_bridge(
     hass: HomeAssistant, cloud_config_entry: MockConfigEntry, lock: loqed.Lock
-):
+) -> None:
     """Test webhook setup in loqed bridge."""
     webhooks_fixture = json.loads(load_fixture("loqed/get_all_webhooks.json"))
 
@@ -143,7 +143,9 @@ async def test_setup_cloudhook_from_entry_in_bridge(
     lock.registerWebhook.assert_called_with(f"{get_url(hass)}/api/webhook/Webhook_id")
 
 
-async def test_unload_entry(hass, integration: MockConfigEntry, lock: loqed.Lock):
+async def test_unload_entry(
+    hass, integration: MockConfigEntry, lock: loqed.Lock
+) -> None:
     """Test successful unload of entry."""
 
     assert await hass.config_entries.async_unload(integration.entry_id)
@@ -154,7 +156,9 @@ async def test_unload_entry(hass, integration: MockConfigEntry, lock: loqed.Lock
     assert not hass.data.get(DOMAIN)
 
 
-async def test_unload_entry_fails(hass, integration: MockConfigEntry, lock: loqed.Lock):
+async def test_unload_entry_fails(
+    hass, integration: MockConfigEntry, lock: loqed.Lock
+) -> None:
     """Test unsuccessful unload of entry."""
     lock.deleteWebhook = AsyncMock(side_effect=Exception)
 
diff --git a/tests/components/matrix/test_commands.py b/tests/components/matrix/test_commands.py
index f71ec22e794..17d92760fa0 100644
--- a/tests/components/matrix/test_commands.py
+++ b/tests/components/matrix/test_commands.py
@@ -131,7 +131,7 @@ async def test_commands(
     matrix_bot: MatrixBot,
     command_events: list[Event],
     command_params: CommandTestParameters,
-):
+) -> None:
     """Test that the configured commands are used correctly."""
     room = MatrixRoom(room_id=command_params.room_id, own_user_id=matrix_bot._mx_id)
 
@@ -160,7 +160,7 @@ async def test_non_commands(
     matrix_bot: MatrixBot,
     command_events: list[Event],
     command_params: CommandTestParameters,
-):
+) -> None:
     """Test that normal/non-qualifying messages don't wrongly trigger commands."""
     room = MatrixRoom(room_id=command_params.room_id, own_user_id=matrix_bot._mx_id)
 
@@ -173,7 +173,7 @@ async def test_non_commands(
     assert len(command_events) == 0
 
 
-async def test_commands_parsing(hass: HomeAssistant, matrix_bot: MatrixBot):
+async def test_commands_parsing(hass: HomeAssistant, matrix_bot: MatrixBot) -> None:
     """Test that the configured commands were parsed correctly."""
 
     await hass.async_start()
diff --git a/tests/components/matrix/test_login.py b/tests/components/matrix/test_login.py
index 8112d98fc8c..caf74576d4e 100644
--- a/tests/components/matrix/test_login.py
+++ b/tests/components/matrix/test_login.py
@@ -90,7 +90,7 @@ bad_password_missing_access_token = LoginTestParameters(
 )
 async def test_login(
     matrix_bot: MatrixBot, caplog: pytest.LogCaptureFixture, params: LoginTestParameters
-):
+) -> None:
     """Test logging in with the given parameters and expected state."""
     await matrix_bot._client.logout()
     matrix_bot._password = params.password
@@ -105,7 +105,7 @@ async def test_login(
     assert set(caplog.messages).issuperset(params.expected_caplog_messages)
 
 
-async def test_get_auth_tokens(matrix_bot: MatrixBot, mock_load_json):
+async def test_get_auth_tokens(matrix_bot: MatrixBot, mock_load_json) -> None:
     """Test loading access_tokens from a mocked file."""
 
     # Test loading good tokens.
diff --git a/tests/components/matrix/test_matrix_bot.py b/tests/components/matrix/test_matrix_bot.py
index bfd6d5824cb..cae8dbef76d 100644
--- a/tests/components/matrix/test_matrix_bot.py
+++ b/tests/components/matrix/test_matrix_bot.py
@@ -11,7 +11,7 @@ from homeassistant.core import HomeAssistant
 from .conftest import TEST_NOTIFIER_NAME
 
 
-async def test_services(hass: HomeAssistant, matrix_bot: MatrixBot):
+async def test_services(hass: HomeAssistant, matrix_bot: MatrixBot) -> None:
     """Test hass/MatrixBot state."""
 
     services = hass.services.async_services()
diff --git a/tests/components/matrix/test_send_message.py b/tests/components/matrix/test_send_message.py
index 0f3a57e90f1..58c0573a22e 100644
--- a/tests/components/matrix/test_send_message.py
+++ b/tests/components/matrix/test_send_message.py
@@ -21,7 +21,7 @@ async def test_send_message(
     image_path,
     matrix_events,
     caplog: pytest.LogCaptureFixture,
-):
+) -> None:
     """Test the send_message service."""
 
     await hass.async_start()
@@ -65,7 +65,7 @@ async def test_unsendable_message(
     matrix_bot: MatrixBot,
     matrix_events,
     caplog: pytest.LogCaptureFixture,
-):
+) -> None:
     """Test the send_message service with an invalid room."""
     assert len(matrix_events) == 0
     await matrix_bot._login()
diff --git a/tests/components/matter/test_fan.py b/tests/components/matter/test_fan.py
index fe466aa15b3..3c4a990018b 100644
--- a/tests/components/matter/test_fan.py
+++ b/tests/components/matter/test_fan.py
@@ -98,7 +98,7 @@ async def test_fan_turn_on_with_percentage(
     hass: HomeAssistant,
     matter_client: MagicMock,
     air_purifier: MatterNode,
-):
+) -> None:
     """Test turning on the fan with a specific percentage."""
     entity_id = "fan.air_purifier"
     await hass.services.async_call(
@@ -119,7 +119,7 @@ async def test_fan_turn_on_with_preset_mode(
     hass: HomeAssistant,
     matter_client: MagicMock,
     air_purifier: MatterNode,
-):
+) -> None:
     """Test turning on the fan with a specific preset mode."""
     entity_id = "fan.air_purifier"
     await hass.services.async_call(
@@ -191,7 +191,7 @@ async def test_fan_turn_off(
     hass: HomeAssistant,
     matter_client: MagicMock,
     air_purifier: MatterNode,
-):
+) -> None:
     """Test turning off the fan."""
     entity_id = "fan.air_purifier"
     await hass.services.async_call(
@@ -233,7 +233,7 @@ async def test_fan_oscillate(
     hass: HomeAssistant,
     matter_client: MagicMock,
     air_purifier: MatterNode,
-):
+) -> None:
     """Test oscillating the fan."""
     entity_id = "fan.air_purifier"
     for oscillating, value in ((True, 1), (False, 0)):
@@ -256,7 +256,7 @@ async def test_fan_set_direction(
     hass: HomeAssistant,
     matter_client: MagicMock,
     air_purifier: MatterNode,
-):
+) -> None:
     """Test oscillating the fan."""
     entity_id = "fan.air_purifier"
     for direction, value in ((DIRECTION_FORWARD, 0), (DIRECTION_REVERSE, 1)):
diff --git a/tests/components/matter/test_init.py b/tests/components/matter/test_init.py
index 6e0a22188ec..9809220099f 100644
--- a/tests/components/matter/test_init.py
+++ b/tests/components/matter/test_init.py
@@ -386,7 +386,7 @@ async def test_update_addon(
     backup_calls: int,
     update_addon_side_effect: Exception | None,
     create_backup_side_effect: Exception | None,
-):
+) -> None:
     """Test update the Matter add-on during entry setup."""
     addon_info.return_value["version"] = addon_version
     addon_info.return_value["update_available"] = update_available
@@ -453,7 +453,7 @@ async def test_issue_registry_invalid_version(
     ],
 )
 async def test_stop_addon(
-    hass,
+    hass: HomeAssistant,
     matter_client: MagicMock,
     addon_installed: AsyncMock,
     addon_running: AsyncMock,
@@ -461,7 +461,7 @@ async def test_stop_addon(
     stop_addon: AsyncMock,
     stop_addon_side_effect: Exception | None,
     entry_state: ConfigEntryState,
-):
+) -> None:
     """Test stop the Matter add-on on entry unload if entry is disabled."""
     stop_addon.side_effect = stop_addon_side_effect
     entry = MockConfigEntry(
diff --git a/tests/components/nibe_heatpump/test_button.py b/tests/components/nibe_heatpump/test_button.py
index e660340c549..5015bba4092 100644
--- a/tests/components/nibe_heatpump/test_button.py
+++ b/tests/components/nibe_heatpump/test_button.py
@@ -41,7 +41,7 @@ async def test_reset_button(
     entity_id: str,
     coils: dict[int, Any],
     freezer_ticker: Any,
-):
+) -> None:
     """Test reset button."""
 
     unit = UNIT_COILGROUPS[model.series]["main"]
diff --git a/tests/components/openhome/test_update.py b/tests/components/openhome/test_update.py
index d3a328b9f9e..354ed26af64 100644
--- a/tests/components/openhome/test_update.py
+++ b/tests/components/openhome/test_update.py
@@ -89,7 +89,7 @@ async def setup_integration(
         await hass.async_block_till_done()
 
 
-async def test_not_supported(hass: HomeAssistant):
+async def test_not_supported(hass: HomeAssistant) -> None:
     """Ensure update entity works if service not supported."""
 
     update_firmware = AsyncMock()
@@ -107,7 +107,7 @@ async def test_not_supported(hass: HomeAssistant):
     update_firmware.assert_not_called()
 
 
-async def test_on_latest_firmware(hass: HomeAssistant):
+async def test_on_latest_firmware(hass: HomeAssistant) -> None:
     """Test device on latest firmware."""
 
     update_firmware = AsyncMock()
@@ -125,7 +125,7 @@ async def test_on_latest_firmware(hass: HomeAssistant):
     update_firmware.assert_not_called()
 
 
-async def test_update_available(hass: HomeAssistant):
+async def test_update_available(hass: HomeAssistant) -> None:
     """Test device has firmware update available."""
 
     update_firmware = AsyncMock()
@@ -158,7 +158,7 @@ async def test_update_available(hass: HomeAssistant):
     update_firmware.assert_called_once()
 
 
-async def test_firmware_update_not_required(hass: HomeAssistant):
+async def test_firmware_update_not_required(hass: HomeAssistant) -> None:
     """Ensure firmware install does nothing if up to date."""
 
     update_firmware = AsyncMock()
diff --git a/tests/components/opensky/test_sensor.py b/tests/components/opensky/test_sensor.py
index 801980ec5b9..0c84762dd50 100644
--- a/tests/components/opensky/test_sensor.py
+++ b/tests/components/opensky/test_sensor.py
@@ -27,7 +27,7 @@ async def test_sensor(
     config_entry: MockConfigEntry,
     snapshot: SnapshotAssertion,
     opensky_client: AsyncMock,
-):
+) -> None:
     """Test setup sensor."""
     await setup_integration(hass, config_entry)
 
@@ -48,7 +48,7 @@ async def test_sensor_altitude(
     config_entry_altitude: MockConfigEntry,
     opensky_client: AsyncMock,
     snapshot: SnapshotAssertion,
-):
+) -> None:
     """Test setup sensor with a set altitude."""
     await setup_integration(hass, config_entry_altitude)
 
@@ -62,7 +62,7 @@ async def test_sensor_updating(
     opensky_client: AsyncMock,
     freezer: FrozenDateTimeFactory,
     snapshot: SnapshotAssertion,
-):
+) -> None:
     """Test updating sensor."""
     await setup_integration(hass, config_entry)
 
diff --git a/tests/components/ping/test_binary_sensor.py b/tests/components/ping/test_binary_sensor.py
index a8346b9a634..ea3145af253 100644
--- a/tests/components/ping/test_binary_sensor.py
+++ b/tests/components/ping/test_binary_sensor.py
@@ -49,7 +49,7 @@ async def test_disabled_after_import(
     hass: HomeAssistant,
     config_entry: MockConfigEntry,
     entity_registry: er.EntityRegistry,
-):
+) -> None:
     """Test if binary sensor is disabled after import."""
     config_entry.add_to_hass(hass)
     hass.config_entries.async_update_entry(
@@ -69,7 +69,7 @@ async def test_disabled_after_import(
 async def test_import_issue_creation(
     hass: HomeAssistant,
     issue_registry: ir.IssueRegistry,
-):
+) -> None:
     """Test if import issue is raised."""
 
     await async_setup_component(
diff --git a/tests/components/ping/test_device_tracker.py b/tests/components/ping/test_device_tracker.py
index a01bd0fa1bf..b1e08c3607b 100644
--- a/tests/components/ping/test_device_tracker.py
+++ b/tests/components/ping/test_device_tracker.py
@@ -88,7 +88,7 @@ async def test_setup_and_update(
 async def test_import_issue_creation(
     hass: HomeAssistant,
     issue_registry: ir.IssueRegistry,
-):
+) -> None:
     """Test if import issue is raised."""
 
     await async_setup_component(
@@ -107,10 +107,7 @@ async def test_import_issue_creation(
     assert issue
 
 
-async def test_import_delete_known_devices(
-    hass: HomeAssistant,
-    entity_registry: er.EntityRegistry,
-):
+async def test_import_delete_known_devices(hass: HomeAssistant) -> None:
     """Test if import deletes known devices."""
     yaml_devices = {
         "test": {
@@ -147,7 +144,7 @@ async def test_reload_not_triggering_home(
     hass: HomeAssistant,
     freezer: FrozenDateTimeFactory,
     config_entry: MockConfigEntry,
-):
+) -> None:
     """Test if reload/restart does not trigger home when device is unavailable."""
     assert hass.states.get("device_tracker.10_10_10_10").state == "home"
 
diff --git a/tests/components/rest_command/test_init.py b/tests/components/rest_command/test_init.py
index 4f88e1b9d34..4429fe4011e 100644
--- a/tests/components/rest_command/test_init.py
+++ b/tests/components/rest_command/test_init.py
@@ -154,7 +154,7 @@ async def test_rest_command_methods(
     setup_component: ComponentSetup,
     aioclient_mock: AiohttpClientMocker,
     method: str,
-):
+) -> None:
     """Test various http methods."""
     await setup_component()
 
diff --git a/tests/components/template/test_light.py b/tests/components/template/test_light.py
index e2b08242453..ad97146d0fb 100644
--- a/tests/components/template/test_light.py
+++ b/tests/components/template/test_light.py
@@ -881,7 +881,7 @@ async def test_legacy_color_action_no_template(
     hass: HomeAssistant,
     setup_light,
     calls: list[ServiceCall],
-):
+) -> None:
     """Test setting color with optimistic template."""
     state = hass.states.get("light.test_template_light")
     assert state.attributes.get("hs_color") is None
@@ -1103,12 +1103,12 @@ async def test_rgbww_color_action_no_template(
     ],
 )
 async def test_legacy_color_template(
-    hass,
-    expected_hs,
-    expected_color_mode,
-    count,
-    color_template,
-):
+    hass: HomeAssistant,
+    expected_hs: tuple[float, float] | None,
+    expected_color_mode: ColorMode,
+    count: int,
+    color_template: str,
+) -> None:
     """Test the template for the color."""
     light_config = {
         "test_template_light": {
diff --git a/tests/components/tplink/test_diagnostics.py b/tests/components/tplink/test_diagnostics.py
index bda5b143a6a..3543cf95572 100644
--- a/tests/components/tplink/test_diagnostics.py
+++ b/tests/components/tplink/test_diagnostics.py
@@ -38,7 +38,7 @@ async def test_diagnostics(
     fixture_file: str,
     sysinfo_vars: list[str],
     expected_oui: str | None,
-):
+) -> None:
     """Test diagnostics for config entry."""
     diagnostics_data = json.loads(load_fixture(fixture_file, "tplink"))
 
diff --git a/tests/components/vultr/test_switch.py b/tests/components/vultr/test_switch.py
index f75021efa05..14c88d1e878 100644
--- a/tests/components/vultr/test_switch.py
+++ b/tests/components/vultr/test_switch.py
@@ -50,7 +50,7 @@ def load_hass_devices(hass: HomeAssistant):
 
 
 @pytest.mark.usefixtures("valid_config")
-def test_switch(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]):
+def test_switch(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]) -> None:
     """Test successful instance."""
 
     assert len(hass_devices) == 3
@@ -97,7 +97,7 @@ def test_switch(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]):
 
 
 @pytest.mark.usefixtures("valid_config")
-def test_turn_on(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]):
+def test_turn_on(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]) -> None:
     """Test turning a subscription on."""
     with (
         patch(
@@ -116,7 +116,7 @@ def test_turn_on(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]):
 
 
 @pytest.mark.usefixtures("valid_config")
-def test_turn_off(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]):
+def test_turn_off(hass: HomeAssistant, hass_devices: list[vultr.VultrSwitch]) -> None:
     """Test turning a subscription off."""
     with (
         patch(
diff --git a/tests/components/wemo/test_coordinator.py b/tests/components/wemo/test_coordinator.py
index 2ef096d2228..198b132bbd0 100644
--- a/tests/components/wemo/test_coordinator.py
+++ b/tests/components/wemo/test_coordinator.py
@@ -191,8 +191,8 @@ async def test_dli_device_info(
 
 
 async def test_options_enable_subscription_false(
-    hass, pywemo_registry, pywemo_device, wemo_entity
-):
+    hass: HomeAssistant, pywemo_registry, pywemo_device, wemo_entity
+) -> None:
     """Test setting Options.enable_subscription = False."""
     config_entry = hass.config_entries.async_get_entry(wemo_entity.config_entry_id)
     assert hass.config_entries.async_update_entry(
@@ -203,7 +203,9 @@ async def test_options_enable_subscription_false(
     pywemo_registry.unregister.assert_called_once_with(pywemo_device)
 
 
-async def test_options_enable_long_press_false(hass, pywemo_device, wemo_entity):
+async def test_options_enable_long_press_false(
+    hass: HomeAssistant, pywemo_device, wemo_entity
+) -> None:
     """Test setting Options.enable_long_press = False."""
     config_entry = hass.config_entries.async_get_entry(wemo_entity.config_entry_id)
     assert hass.config_entries.async_update_entry(
diff --git a/tests/components/zha/test_base.py b/tests/components/zha/test_base.py
index e9c5a0a8e9c..ee5293d16b9 100644
--- a/tests/components/zha/test_base.py
+++ b/tests/components/zha/test_base.py
@@ -9,11 +9,11 @@ from tests.components.zha.test_cluster_handlers import (  # noqa: F401
 )
 
 
-def test_parse_and_log_command(poll_control_ch):  # noqa: F811
+def test_parse_and_log_command(poll_control_ch) -> None:  # noqa: F811
     """Test that `parse_and_log_command` correctly parses a known command."""
     assert parse_and_log_command(poll_control_ch, 0x00, 0x01, []) == "fast_poll_stop"
 
 
-def test_parse_and_log_command_unknown(poll_control_ch):  # noqa: F811
+def test_parse_and_log_command_unknown(poll_control_ch) -> None:  # noqa: F811
     """Test that `parse_and_log_command` correctly parses an unknown command."""
     assert parse_and_log_command(poll_control_ch, 0x00, 0xAB, []) == "0xAB"
diff --git a/tests/components/zha/test_gateway.py b/tests/components/zha/test_gateway.py
index 666594bd854..3a576ed6e55 100644
--- a/tests/components/zha/test_gateway.py
+++ b/tests/components/zha/test_gateway.py
@@ -300,7 +300,7 @@ async def test_single_reload_on_multiple_connection_loss(
     hass: HomeAssistant,
     zigpy_app_controller: ControllerApplication,
     config_entry: MockConfigEntry,
-):
+) -> None:
     """Test that we only reload once when we lose the connection multiple times."""
     config_entry.add_to_hass(hass)
 
@@ -333,7 +333,7 @@ async def test_startup_concurrency_limit(
     zigpy_app_controller: ControllerApplication,
     config_entry: MockConfigEntry,
     zigpy_device_mock,
-):
+) -> None:
     """Test ZHA gateway limits concurrency on startup."""
     config_entry.add_to_hass(hass)
     zha_gateway = ZHAGateway(hass, {}, config_entry)