diff --git a/homeassistant/components/august/__init__.py b/homeassistant/components/august/__init__.py
index 4e6c2a11b06..a1547778f81 100644
--- a/homeassistant/components/august/__init__.py
+++ b/homeassistant/components/august/__init__.py
@@ -7,7 +7,7 @@ from collections.abc import Callable, Coroutine, Iterable, ValuesView
 from datetime import datetime
 from itertools import chain
 import logging
-from typing import Any, ParamSpec, TypeVar
+from typing import Any
 
 from aiohttp import ClientError, ClientResponseError
 from yalexs.activity import ActivityTypes
@@ -36,9 +36,6 @@ from .gateway import AugustGateway
 from .subscriber import AugustSubscriberMixin
 from .util import async_create_august_clientsession
 
-_R = TypeVar("_R")
-_P = ParamSpec("_P")
-
 _LOGGER = logging.getLogger(__name__)
 
 API_CACHED_ATTRS = {
@@ -403,7 +400,7 @@ class AugustData(AugustSubscriberMixin):
             hyper_bridge,
         )
 
-    async def _async_call_api_op_requires_bridge(
+    async def _async_call_api_op_requires_bridge[**_P, _R](
         self,
         device_id: str,
         func: Callable[_P, Coroutine[Any, Any, _R]],
diff --git a/homeassistant/components/counter/__init__.py b/homeassistant/components/counter/__init__.py
index a607a7bdebe..3d68d70e575 100644
--- a/homeassistant/components/counter/__init__.py
+++ b/homeassistant/components/counter/__init__.py
@@ -3,7 +3,7 @@
 from __future__ import annotations
 
 import logging
-from typing import Any, Self, TypeVar
+from typing import Any, Self
 
 import voluptuous as vol
 
@@ -23,8 +23,6 @@ from homeassistant.helpers.restore_state import RestoreEntity
 from homeassistant.helpers.storage import Store
 from homeassistant.helpers.typing import ConfigType
 
-_T = TypeVar("_T")
-
 _LOGGER = logging.getLogger(__name__)
 
 ATTR_INITIAL = "initial"
@@ -62,7 +60,7 @@ STORAGE_FIELDS = {
 }
 
 
-def _none_to_empty_dict(value: _T | None) -> _T | dict[str, Any]:
+def _none_to_empty_dict[_T](value: _T | None) -> _T | dict[str, Any]:
     if value is None:
         return {}
     return value
diff --git a/homeassistant/components/cover/__init__.py b/homeassistant/components/cover/__init__.py
index ac9c0384dea..9e3184b4822 100644
--- a/homeassistant/components/cover/__init__.py
+++ b/homeassistant/components/cover/__init__.py
@@ -8,7 +8,7 @@ from enum import IntFlag, StrEnum
 import functools as ft
 from functools import cached_property
 import logging
-from typing import Any, ParamSpec, TypeVar, final
+from typing import Any, final
 
 import voluptuous as vol
 
@@ -54,9 +54,6 @@ SCAN_INTERVAL = timedelta(seconds=15)
 
 ENTITY_ID_FORMAT = DOMAIN + ".{}"
 
-_P = ParamSpec("_P")
-_R = TypeVar("_R")
-
 
 class CoverDeviceClass(StrEnum):
     """Device class for cover."""
@@ -477,7 +474,7 @@ class CoverEntity(Entity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
         else:
             await self.async_close_cover_tilt(**kwargs)
 
-    def _get_toggle_function(
+    def _get_toggle_function[**_P, _R](
         self, fns: dict[str, Callable[_P, _R]]
     ) -> Callable[_P, _R]:
         # If we are opening or closing and we support stopping, then we should stop
diff --git a/homeassistant/components/diagnostics/util.py b/homeassistant/components/diagnostics/util.py
index 9b33b33f1ed..989433e15b2 100644
--- a/homeassistant/components/diagnostics/util.py
+++ b/homeassistant/components/diagnostics/util.py
@@ -3,14 +3,12 @@
 from __future__ import annotations
 
 from collections.abc import Iterable, Mapping
-from typing import Any, TypeVar, cast, overload
+from typing import Any, cast, overload
 
 from homeassistant.core import callback
 
 from .const import REDACTED
 
-_T = TypeVar("_T")
-
 
 @overload
 def async_redact_data(data: Mapping, to_redact: Iterable[Any]) -> dict:  # type: ignore[overload-overlap]
@@ -18,11 +16,11 @@ def async_redact_data(data: Mapping, to_redact: Iterable[Any]) -> dict:  # type:
 
 
 @overload
-def async_redact_data(data: _T, to_redact: Iterable[Any]) -> _T: ...
+def async_redact_data[_T](data: _T, to_redact: Iterable[Any]) -> _T: ...
 
 
 @callback
-def async_redact_data(data: _T, to_redact: Iterable[Any]) -> _T:
+def async_redact_data[_T](data: _T, to_redact: Iterable[Any]) -> _T:
     """Redact sensitive data in a dict."""
     if not isinstance(data, (Mapping, list)):
         return data
diff --git a/homeassistant/components/fitbit/api.py b/homeassistant/components/fitbit/api.py
index 0f49c0858f5..1eed5acbcca 100644
--- a/homeassistant/components/fitbit/api.py
+++ b/homeassistant/components/fitbit/api.py
@@ -3,7 +3,7 @@
 from abc import ABC, abstractmethod
 from collections.abc import Callable
 import logging
-from typing import Any, TypeVar, cast
+from typing import Any, cast
 
 from fitbit import Fitbit
 from fitbit.exceptions import HTTPException, HTTPUnauthorized
@@ -24,9 +24,6 @@ CONF_REFRESH_TOKEN = "refresh_token"
 CONF_EXPIRES_AT = "expires_at"
 
 
-_T = TypeVar("_T")
-
-
 class FitbitApi(ABC):
     """Fitbit client library wrapper base class.
 
@@ -129,7 +126,7 @@ class FitbitApi(ABC):
         dated_results: list[dict[str, Any]] = response[key]
         return dated_results[-1]
 
-    async def _run(self, func: Callable[[], _T]) -> _T:
+    async def _run[_T](self, func: Callable[[], _T]) -> _T:
         """Run client command."""
         try:
             return await self._hass.async_add_executor_job(func)
diff --git a/homeassistant/components/fronius/__init__.py b/homeassistant/components/fronius/__init__.py
index 18129ab0bcc..07271b91f28 100644
--- a/homeassistant/components/fronius/__init__.py
+++ b/homeassistant/components/fronius/__init__.py
@@ -5,7 +5,7 @@ from __future__ import annotations
 import asyncio
 from datetime import datetime, timedelta
 import logging
-from typing import Final, TypeVar
+from typing import Final
 
 from pyfronius import Fronius, FroniusError
 
@@ -39,8 +39,6 @@ from .coordinator import (
 _LOGGER: Final = logging.getLogger(__name__)
 PLATFORMS: Final = [Platform.SENSOR]
 
-_FroniusCoordinatorT = TypeVar("_FroniusCoordinatorT", bound=FroniusCoordinatorBase)
-
 type FroniusConfigEntry = ConfigEntry[FroniusSolarNet]
 
 
@@ -255,7 +253,7 @@ class FroniusSolarNet:
         return inverter_infos
 
     @staticmethod
-    async def _init_optional_coordinator(
+    async def _init_optional_coordinator[_FroniusCoordinatorT: FroniusCoordinatorBase](
         coordinator: _FroniusCoordinatorT,
     ) -> _FroniusCoordinatorT | None:
         """Initialize an update coordinator and return it if devices are found."""
diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index 3efeabfa778..e39634a5dd6 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -5,7 +5,7 @@ from __future__ import annotations
 from abc import ABC, abstractmethod
 from datetime import datetime, timedelta
 import logging
-from typing import Any, TypeVar
+from typing import Any
 
 from homeassistant.components import (
     alarm_control_panel,
@@ -242,10 +242,8 @@ COVER_VALVE_DOMAINS = {cover.DOMAIN, valve.DOMAIN}
 
 FRIENDLY_DOMAIN = {cover.DOMAIN: "Cover", valve.DOMAIN: "Valve"}
 
-_TraitT = TypeVar("_TraitT", bound="_Trait")
 
-
-def register_trait(trait: type[_TraitT]) -> type[_TraitT]:
+def register_trait[_TraitT: _Trait](trait: type[_TraitT]) -> type[_TraitT]:
     """Decorate a class to register a trait."""
     TRAITS.append(trait)
     return trait
diff --git a/homeassistant/components/history_stats/sensor.py b/homeassistant/components/history_stats/sensor.py
index 0134f4682a5..0b02ddb2a8e 100644
--- a/homeassistant/components/history_stats/sensor.py
+++ b/homeassistant/components/history_stats/sensor.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from abc import abstractmethod
 import datetime
-from typing import Any, TypeVar
+from typing import Any
 
 import voluptuous as vol
 
@@ -55,10 +55,8 @@ UNITS: dict[str, str] = {
 }
 ICON = "mdi:chart-line"
 
-_T = TypeVar("_T", bound=dict[str, Any])
 
-
-def exactly_two_period_keys(conf: _T) -> _T:
+def exactly_two_period_keys[_T: dict[str, Any]](conf: _T) -> _T:
     """Ensure exactly 2 of CONF_PERIOD_KEYS are provided."""
     if sum(param in conf for param in CONF_PERIOD_KEYS) != 2:
         raise vol.Invalid(
diff --git a/homeassistant/components/homeassistant/triggers/numeric_state.py b/homeassistant/components/homeassistant/triggers/numeric_state.py
index 43cc3d0918e..bc2c95675ad 100644
--- a/homeassistant/components/homeassistant/triggers/numeric_state.py
+++ b/homeassistant/components/homeassistant/triggers/numeric_state.py
@@ -5,7 +5,7 @@ from __future__ import annotations
 from collections.abc import Callable
 from datetime import timedelta
 import logging
-from typing import Any, TypeVar
+from typing import Any
 
 import voluptuous as vol
 
@@ -41,10 +41,8 @@ from homeassistant.helpers.event import (
 from homeassistant.helpers.trigger import TriggerActionType, TriggerInfo
 from homeassistant.helpers.typing import ConfigType
 
-_T = TypeVar("_T", bound=dict[str, Any])
 
-
-def validate_above_below(value: _T) -> _T:
+def validate_above_below[_T: dict[str, Any]](value: _T) -> _T:
     """Validate that above and below can co-exist."""
     above = value.get(CONF_ABOVE)
     below = value.get(CONF_BELOW)
diff --git a/homeassistant/components/improv_ble/config_flow.py b/homeassistant/components/improv_ble/config_flow.py
index 370b244dac2..f38f4830ace 100644
--- a/homeassistant/components/improv_ble/config_flow.py
+++ b/homeassistant/components/improv_ble/config_flow.py
@@ -6,7 +6,7 @@ import asyncio
 from collections.abc import Callable, Coroutine
 from dataclasses import dataclass
 import logging
-from typing import Any, TypeVar
+from typing import Any
 
 from bleak import BleakError
 from improv_ble_client import (
@@ -30,8 +30,6 @@ from .const import DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-_T = TypeVar("_T")
-
 STEP_PROVISION_SCHEMA = vol.Schema(
     {
         vol.Required("ssid"): str,
@@ -392,7 +390,7 @@ class ImprovBLEConfigFlow(ConfigFlow, domain=DOMAIN):
         return self.async_show_progress_done(next_step_id="provision")
 
     @staticmethod
-    async def _try_call(func: Coroutine[Any, Any, _T]) -> _T:
+    async def _try_call[_T](func: Coroutine[Any, Any, _T]) -> _T:
         """Call the library and abort flow on common errors."""
         try:
             return await func
diff --git a/homeassistant/components/linear_garage_door/coordinator.py b/homeassistant/components/linear_garage_door/coordinator.py
index 91ff0165163..35ccced3274 100644
--- a/homeassistant/components/linear_garage_door/coordinator.py
+++ b/homeassistant/components/linear_garage_door/coordinator.py
@@ -6,7 +6,7 @@ from collections.abc import Awaitable, Callable
 from dataclasses import dataclass
 from datetime import timedelta
 import logging
-from typing import Any, TypeVar
+from typing import Any
 
 from linear_garage_door import Linear
 from linear_garage_door.errors import InvalidLoginError
@@ -19,8 +19,6 @@ from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
-_T = TypeVar("_T")
-
 
 @dataclass
 class LinearDevice:
@@ -63,7 +61,7 @@ class LinearUpdateCoordinator(DataUpdateCoordinator[dict[str, LinearDevice]]):
 
         return await self.execute(update_data)
 
-    async def execute(self, func: Callable[[Linear], Awaitable[_T]]) -> _T:
+    async def execute[_T](self, func: Callable[[Linear], Awaitable[_T]]) -> _T:
         """Execute an API call."""
         linear = Linear()
         try:
diff --git a/homeassistant/components/melnor/models.py b/homeassistant/components/melnor/models.py
index 933b2972d6a..377a758a2be 100644
--- a/homeassistant/components/melnor/models.py
+++ b/homeassistant/components/melnor/models.py
@@ -1,7 +1,6 @@
 """Melnor integration models."""
 
 from collections.abc import Callable
-from typing import TypeVar
 
 from melnor_bluetooth.device import Device, Valve
 
@@ -77,14 +76,11 @@ class MelnorZoneEntity(MelnorBluetoothEntity):
         )
 
 
-T = TypeVar("T", bound=EntityDescription)
-
-
-def get_entities_for_valves(
+def get_entities_for_valves[_T: EntityDescription](
     coordinator: MelnorDataUpdateCoordinator,
-    descriptions: list[T],
+    descriptions: list[_T],
     function: Callable[
-        [Valve, T],
+        [Valve, _T],
         CoordinatorEntity[MelnorDataUpdateCoordinator],
     ],
 ) -> list[CoordinatorEntity[MelnorDataUpdateCoordinator]]:
diff --git a/homeassistant/components/radiotherm/__init__.py b/homeassistant/components/radiotherm/__init__.py
index d5f1e4c076c..7b2eaba52c4 100644
--- a/homeassistant/components/radiotherm/__init__.py
+++ b/homeassistant/components/radiotherm/__init__.py
@@ -3,7 +3,7 @@
 from __future__ import annotations
 
 from collections.abc import Coroutine
-from typing import Any, TypeVar
+from typing import Any
 from urllib.error import URLError
 
 from radiotherm.validate import RadiothermTstatError
@@ -20,10 +20,8 @@ from .util import async_set_time
 
 PLATFORMS: list[Platform] = [Platform.CLIMATE, Platform.SWITCH]
 
-_T = TypeVar("_T")
 
-
-async def _async_call_or_raise_not_ready(
+async def _async_call_or_raise_not_ready[_T](
     coro: Coroutine[Any, Any, _T], host: str
 ) -> _T:
     """Call a coro or raise ConfigEntryNotReady."""
diff --git a/homeassistant/components/recorder/core.py b/homeassistant/components/recorder/core.py
index 108cc721466..65ad5664846 100644
--- a/homeassistant/components/recorder/core.py
+++ b/homeassistant/components/recorder/core.py
@@ -12,7 +12,7 @@ import queue
 import sqlite3
 import threading
 import time
-from typing import TYPE_CHECKING, Any, TypeVar, cast
+from typing import TYPE_CHECKING, Any, cast
 
 import psutil_home_assistant as ha_psutil
 from sqlalchemy import create_engine, event as sqlalchemy_event, exc, select, update
@@ -138,8 +138,6 @@ from .util import (
 
 _LOGGER = logging.getLogger(__name__)
 
-T = TypeVar("T")
-
 DEFAULT_URL = "sqlite:///{hass_config_path}"
 
 # Controls how often we clean up
@@ -366,9 +364,9 @@ class Recorder(threading.Thread):
             self.queue_task(COMMIT_TASK)
 
     @callback
-    def async_add_executor_job(
-        self, target: Callable[..., T], *args: Any
-    ) -> asyncio.Future[T]:
+    def async_add_executor_job[_T](
+        self, target: Callable[..., _T], *args: Any
+    ) -> asyncio.Future[_T]:
         """Add an executor job from within the event loop."""
         return self.hass.loop.run_in_executor(self._db_executor, target, *args)
 
diff --git a/homeassistant/components/rfxtrx/__init__.py b/homeassistant/components/rfxtrx/__init__.py
index fb339f4ba5a..f3466aa704d 100644
--- a/homeassistant/components/rfxtrx/__init__.py
+++ b/homeassistant/components/rfxtrx/__init__.py
@@ -6,7 +6,7 @@ import binascii
 from collections.abc import Callable, Mapping
 import copy
 import logging
-from typing import Any, NamedTuple, TypeVarTuple, cast
+from typing import Any, NamedTuple, cast
 
 import RFXtrx as rfxtrxmod
 import voluptuous as vol
@@ -55,8 +55,6 @@ DEFAULT_OFF_DELAY = 2.0
 SIGNAL_EVENT = f"{DOMAIN}_event"
 CONNECT_TIMEOUT = 30.0
 
-_Ts = TypeVarTuple("_Ts")
-
 _LOGGER = logging.getLogger(__name__)
 
 
@@ -573,7 +571,7 @@ class RfxtrxCommandEntity(RfxtrxEntity):
         """Initialzie a switch or light device."""
         super().__init__(device, device_id, event=event)
 
-    async def _async_send(
+    async def _async_send[*_Ts](
         self, fun: Callable[[rfxtrxmod.PySerialTransport, *_Ts], None], *args: *_Ts
     ) -> None:
         rfx_object: rfxtrxmod.Connect = self.hass.data[DOMAIN][DATA_RFXOBJECT]
diff --git a/homeassistant/components/ring/coordinator.py b/homeassistant/components/ring/coordinator.py
index a10f9317bab..1a52fc78988 100644
--- a/homeassistant/components/ring/coordinator.py
+++ b/homeassistant/components/ring/coordinator.py
@@ -3,7 +3,6 @@
 from asyncio import TaskGroup
 from collections.abc import Callable
 import logging
-from typing import TypeVar, TypeVarTuple
 
 from ring_doorbell import AuthenticationError, Ring, RingDevices, RingError, RingTimeout
 
@@ -15,11 +14,8 @@ from .const import NOTIFICATIONS_SCAN_INTERVAL, SCAN_INTERVAL
 
 _LOGGER = logging.getLogger(__name__)
 
-_R = TypeVar("_R")
-_Ts = TypeVarTuple("_Ts")
 
-
-async def _call_api(
+async def _call_api[*_Ts, _R](
     hass: HomeAssistant, target: Callable[[*_Ts], _R], *args: *_Ts, msg_suffix: str = ""
 ) -> _R:
     try:
diff --git a/homeassistant/components/soma/__init__.py b/homeassistant/components/soma/__init__.py
index cd282a9f276..7b14aaa3c81 100644
--- a/homeassistant/components/soma/__init__.py
+++ b/homeassistant/components/soma/__init__.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from collections.abc import Callable, Coroutine
 import logging
-from typing import Any, TypeVar
+from typing import Any
 
 from api.soma_api import SomaApi
 from requests import RequestException
@@ -22,8 +22,6 @@ from homeassistant.helpers.typing import ConfigType
 from .const import API, DOMAIN, HOST, PORT
 from .utils import is_api_response_success
 
-_SomaEntityT = TypeVar("_SomaEntityT", bound="SomaEntity")
-
 _LOGGER = logging.getLogger(__name__)
 
 DEVICES = "devices"
@@ -76,7 +74,7 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
 
 
-def soma_api_call(
+def soma_api_call[_SomaEntityT: SomaEntity](
     api_call: Callable[[_SomaEntityT], Coroutine[Any, Any, dict]],
 ) -> Callable[[_SomaEntityT], Coroutine[Any, Any, dict]]:
     """Soma api call decorator."""
diff --git a/homeassistant/components/timer/__init__.py b/homeassistant/components/timer/__init__.py
index 5da68d99dd6..8927439a6cc 100644
--- a/homeassistant/components/timer/__init__.py
+++ b/homeassistant/components/timer/__init__.py
@@ -5,7 +5,7 @@ from __future__ import annotations
 from collections.abc import Callable
 from datetime import datetime, timedelta
 import logging
-from typing import Any, Self, TypeVar
+from typing import Any, Self
 
 import voluptuous as vol
 
@@ -29,7 +29,6 @@ from homeassistant.helpers.storage import Store
 from homeassistant.helpers.typing import ConfigType
 import homeassistant.util.dt as dt_util
 
-_T = TypeVar("_T")
 _LOGGER = logging.getLogger(__name__)
 
 DOMAIN = "timer"
@@ -82,7 +81,7 @@ def _format_timedelta(delta: timedelta) -> str:
     return f"{int(hours)}:{int(minutes):02}:{int(seconds):02}"
 
 
-def _none_to_empty_dict(value: _T | None) -> _T | dict[Any, Any]:
+def _none_to_empty_dict[_T](value: _T | None) -> _T | dict[Any, Any]:
     if value is None:
         return {}
     return value
diff --git a/homeassistant/components/zha/core/helpers.py b/homeassistant/components/zha/core/helpers.py
index a47d8ec8bf0..2508dd34fd4 100644
--- a/homeassistant/components/zha/core/helpers.py
+++ b/homeassistant/components/zha/core/helpers.py
@@ -14,7 +14,7 @@ from dataclasses import dataclass
 import enum
 import logging
 import re
-from typing import TYPE_CHECKING, Any, TypeVar, overload
+from typing import TYPE_CHECKING, Any, overload
 
 import voluptuous as vol
 import zigpy.exceptions
@@ -62,7 +62,6 @@ if TYPE_CHECKING:
     from .device import ZHADevice
     from .gateway import ZHAGateway
 
-_T = TypeVar("_T")
 _LOGGER = logging.getLogger(__name__)
 
 
@@ -228,7 +227,7 @@ def async_is_bindable_target(source_zha_device, target_zha_device):
 
 
 @callback
-def async_get_zha_config_value(
+def async_get_zha_config_value[_T](
     config_entry: ConfigEntry, section: str, config_key: str, default: _T
 ) -> _T:
     """Get the value for the specified configuration from the ZHA config entry."""
diff --git a/homeassistant/components/zha/websocket_api.py b/homeassistant/components/zha/websocket_api.py
index 6e34ea01355..70be438bf24 100644
--- a/homeassistant/components/zha/websocket_api.py
+++ b/homeassistant/components/zha/websocket_api.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 
 import asyncio
 import logging
-from typing import TYPE_CHECKING, Any, Literal, NamedTuple, TypeVar, cast
+from typing import TYPE_CHECKING, Any, Literal, NamedTuple, cast
 
 import voluptuous as vol
 import zigpy.backups
@@ -118,11 +118,8 @@ IEEE_SERVICE = "ieee_based_service"
 
 IEEE_SCHEMA = vol.All(cv.string, EUI64.convert)
 
-# typing typevar
-_T = TypeVar("_T")
 
-
-def _ensure_list_if_present(value: _T | None) -> list[_T] | list[Any] | None:
+def _ensure_list_if_present[_T](value: _T | None) -> list[_T] | list[Any] | None:
     """Wrap value in list if it is provided and not one."""
     if value is None:
         return None