diff --git a/homeassistant/components/binary_sensor/icons.json b/homeassistant/components/binary_sensor/icons.json
new file mode 100644
index 00000000000..5bd1c338921
--- /dev/null
+++ b/homeassistant/components/binary_sensor/icons.json
@@ -0,0 +1,178 @@
+{
+  "entity_component": {
+    "_": {
+      "default": "mdi:radiobox-blank",
+      "state": {
+        "on": "mdi:checkbox-marked-circle"
+      }
+    },
+    "battery": {
+      "default": "mdi:battery",
+      "state": {
+        "on": "mdi:battery-outline"
+      }
+    },
+    "battery_charging": {
+      "default": "mdi:battery",
+      "state": {
+        "on": "mdi:battery-charging"
+      }
+    },
+    "carbon_monoxide": {
+      "default": "mdi:smoke-detector",
+      "state": {
+        "on": "mdi:smoke-detector-alert"
+      }
+    },
+    "cold": {
+      "default": "mdi:thermometer",
+      "state": {
+        "on": "mdi:snowflake"
+      }
+    },
+    "connectivity": {
+      "default": "mdi:close-network-outline",
+      "state": {
+        "on": "mdi:check-network-outline"
+      }
+    },
+    "door": {
+      "default": "mdi:door-closed",
+      "state": {
+        "on": "mdi:door-open"
+      }
+    },
+    "garage_door": {
+      "default": "mdi:garage",
+      "state": {
+        "on": "mdi:garage-open"
+      }
+    },
+    "gas": {
+      "default": "mdi:check-circle",
+      "state": {
+        "on": "mdi:alert-circle"
+      }
+    },
+    "heat": {
+      "default": "mdi:thermometer",
+      "state": {
+        "on": "mdi:fire"
+      }
+    },
+    "light": {
+      "default": "mdi:brightness-5",
+      "state": {
+        "on": "mdi:brightness-7"
+      }
+    },
+    "lock": {
+      "default": "mdi:lock",
+      "state": {
+        "on": "mdi:lock-open"
+      }
+    },
+    "moisture": {
+      "default": "mdi:water-off",
+      "state": {
+        "on": "mdi:water"
+      }
+    },
+    "motion": {
+      "default": "mdi:motion-sensor-off",
+      "state": {
+        "on": "mdi:motion-sensor"
+      }
+    },
+    "moving": {
+      "default": "mdi:arrow-right",
+      "state": {
+        "on": "mdi:octagon"
+      }
+    },
+    "occupancy": {
+      "default": "mdi:home-outline",
+      "state": {
+        "on": "mdi:home"
+      }
+    },
+    "opening": {
+      "default": "mdi:square",
+      "state": {
+        "on": "mdi:square-outline"
+      }
+    },
+    "plug": {
+      "default": "mdi:power-plug-off",
+      "state": {
+        "on": "mdi:power-plug"
+      }
+    },
+    "power": {
+      "default": "mdi:power-plug-off",
+      "state": {
+        "on": "mdi:power-plug"
+      }
+    },
+    "presence": {
+      "default": "mdi:home-outline",
+      "state": {
+        "on": "mdi:home"
+      }
+    },
+    "problem": {
+      "default": "mdi:check-circle",
+      "state": {
+        "on": "mdi:alert-circle"
+      }
+    },
+    "running": {
+      "default": "mdi:stop",
+      "state": {
+        "on": "mdi:play"
+      }
+    },
+    "safety": {
+      "default": "mdi:check-circle",
+      "state": {
+        "on": "mdi:alert-circle"
+      }
+    },
+    "smoke": {
+      "default": "mdi:smoke-detector-variant",
+      "state": {
+        "on": "mdi:smoke-detector-variant-alert"
+      }
+    },
+    "sound": {
+      "default": "mdi:music-note-off",
+      "state": {
+        "on": "mdi:music-note"
+      }
+    },
+    "tamper": {
+      "default": "mdi:check-circle",
+      "state": {
+        "on": "mdi:alert-circle"
+      }
+    },
+    "update": {
+      "default": "mdi:package",
+      "state": {
+        "on": "mdi:package-up"
+      }
+    },
+    "vibration": {
+      "default": "mdi:crop-portrait",
+      "state": {
+        "on": "mdi:vibrate"
+      }
+    },
+    "window": {
+      "default": "mdi:window-closed",
+      "state": {
+        "on": "mdi:window-open"
+      }
+    }
+  }
+}
diff --git a/homeassistant/components/demo/icons.json b/homeassistant/components/demo/icons.json
new file mode 100644
index 00000000000..79c18bc0a2e
--- /dev/null
+++ b/homeassistant/components/demo/icons.json
@@ -0,0 +1,62 @@
+{
+  "entity": {
+    "climate": {
+      "ubercool": {
+        "state_attributes": {
+          "fan_mode": {
+            "state": {
+              "auto_high": "mdi:fan-auto",
+              "auto_low": "mdi:fan-auto",
+              "on_high": "mdi:fan-chevron-up",
+              "on_low": "mdi:fan-chevron-down"
+            }
+          },
+          "swing_mode": {
+            "state": {
+              "1": "mdi:numeric-1",
+              "2": "mdi:numeric-2",
+              "3": "mdi:numeric-3",
+              "auto": "mdi:arrow-oscillating",
+              "off": "mdi:arrow-oscillating-off"
+            }
+          }
+        }
+      }
+    },
+    "number": {
+      "volume": {
+        "default": "mdi:volume-high"
+      },
+      "pwm": {
+        "default": "mdi:square-wave"
+      },
+      "range": {
+        "default": "mdi:square-wave"
+      }
+    },
+    "select": {
+      "speed": {
+        "state": {
+          "light_speed": "mdi:speedometer-slow",
+          "ludicrous_speed": "mdi:speedometer-medium",
+          "ridiculous_speed": "mdi:speedometer"
+        }
+      }
+    },
+    "sensor": {
+      "thermostat_mode": {
+        "state": {
+          "away": "mdi:home-export-outline",
+          "comfort": "mdi:home-account",
+          "eco": "mdi:leaf",
+          "sleep": "mdi:weather-night"
+        }
+      }
+    },
+    "switch": {
+      "air_conditioner": {
+        "default": "mdi:air-conditioner"
+      }
+    }
+  }
+}
diff --git a/homeassistant/components/demo/number.py b/homeassistant/components/demo/number.py
index 5bc0462769d..db065054804 100644
--- a/homeassistant/components/demo/number.py
+++ b/homeassistant/components/demo/number.py
@@ -23,7 +23,7 @@ async def async_setup_entry(
                 "volume1",
                 "volume",
                 42.0,
-                "mdi:volume-high",
+                "volume",
                 False,
                 mode=NumberMode.SLIDER,
             ),
@@ -31,7 +31,7 @@ async def async_setup_entry(
                 "pwm1",
                 "PWM 1",
                 0.42,
-                "mdi:square-wave",
+                "pwm",
                 False,
                 native_min_value=0.0,
                 native_max_value=1.0,
@@ -42,7 +42,7 @@ async def async_setup_entry(
                 "large_range",
                 "Large Range",
                 500,
-                "mdi:square-wave",
+                "range",
                 False,
                 native_min_value=1,
                 native_max_value=1000,
@@ -52,7 +52,7 @@ async def async_setup_entry(
                 "small_range",
                 "Small Range",
                 128,
-                "mdi:square-wave",
+                "range",
                 False,
                 native_min_value=1,
                 native_max_value=255,
@@ -62,7 +62,7 @@ async def async_setup_entry(
                 "temp1",
                 "Temperature setting",
                 22,
-                "mdi:thermometer",
+                None,
                 False,
                 device_class=NumberDeviceClass.TEMPERATURE,
                 native_min_value=15.0,
@@ -87,7 +87,7 @@ class DemoNumber(NumberEntity):
         unique_id: str,
         device_name: str,
         state: float,
-        icon: str,
+        translation_key: str | None,
         assumed_state: bool,
         *,
         device_class: NumberDeviceClass | None = None,
@@ -100,7 +100,7 @@ class DemoNumber(NumberEntity):
         """Initialize the Demo Number entity."""
         self._attr_assumed_state = assumed_state
         self._attr_device_class = device_class
-        self._attr_icon = icon
+        self._attr_translation_key = translation_key
         self._attr_mode = mode
         self._attr_native_unit_of_measurement = unit_of_measurement
         self._attr_native_value = state
diff --git a/homeassistant/components/demo/remote.py b/homeassistant/components/demo/remote.py
index 40df72b073b..f4f81a52052 100644
--- a/homeassistant/components/demo/remote.py
+++ b/homeassistant/components/demo/remote.py
@@ -19,8 +19,8 @@ async def async_setup_entry(
     """Set up the Demo config entry."""
     async_add_entities(
         [
-            DemoRemote("Remote One", False, None),
-            DemoRemote("Remote Two", True, "mdi:remote"),
+            DemoRemote("Remote One", False),
+            DemoRemote("Remote Two", True),
         ]
     )
 
@@ -30,11 +30,10 @@ class DemoRemote(RemoteEntity):
 
     _attr_should_poll = False
 
-    def __init__(self, name: str | None, state: bool, icon: str | None) -> None:
+    def __init__(self, name: str | None, state: bool) -> None:
         """Initialize the Demo Remote."""
         self._attr_name = name or DEVICE_DEFAULT_NAME
         self._attr_is_on = state
-        self._attr_icon = icon
         self._last_command_sent: str | None = None
 
     @property
diff --git a/homeassistant/components/demo/select.py b/homeassistant/components/demo/select.py
index 2a50b0151b6..58244e063f5 100644
--- a/homeassistant/components/demo/select.py
+++ b/homeassistant/components/demo/select.py
@@ -21,7 +21,6 @@ async def async_setup_entry(
             DemoSelect(
                 unique_id="speed",
                 device_name="Speed",
-                icon="mdi:speedometer",
                 current_option="ridiculous_speed",
                 options=[
                     "light_speed",
@@ -45,7 +44,6 @@ class DemoSelect(SelectEntity):
         self,
         unique_id: str,
         device_name: str,
-        icon: str,
         current_option: str | None,
         options: list[str],
         translation_key: str,
@@ -53,7 +51,6 @@ class DemoSelect(SelectEntity):
         """Initialize the Demo select entity."""
         self._attr_unique_id = unique_id
         self._attr_current_option = current_option
-        self._attr_icon = icon
         self._attr_options = options
         self._attr_translation_key = translation_key
         self._attr_device_info = DeviceInfo(
diff --git a/homeassistant/components/demo/switch.py b/homeassistant/components/demo/switch.py
index eac267c7c15..ac91b069d8d 100644
--- a/homeassistant/components/demo/switch.py
+++ b/homeassistant/components/demo/switch.py
@@ -20,13 +20,13 @@ async def async_setup_entry(
     """Set up the demo switch platform."""
     async_add_entities(
         [
-            DemoSwitch("switch1", "Decorative Lights", True, None, True),
+            DemoSwitch("switch1", "Decorative Lights", True, True),
             DemoSwitch(
                 "switch2",
                 "AC",
                 False,
-                "mdi:air-conditioner",
                 False,
+                translation_key="air_conditioner",
                 device_class=SwitchDeviceClass.OUTLET,
             ),
         ]
@@ -45,14 +45,14 @@ class DemoSwitch(SwitchEntity):
         unique_id: str,
         device_name: str,
         state: bool,
-        icon: str | None,
         assumed: bool,
+        translation_key: str | None = None,
         device_class: SwitchDeviceClass | None = None,
     ) -> None:
         """Initialize the Demo switch."""
         self._attr_assumed_state = assumed
         self._attr_device_class = device_class
-        self._attr_icon = icon
+        self._attr_translation_key = translation_key
         self._attr_is_on = state
         self._attr_unique_id = unique_id
         self._attr_device_info = DeviceInfo(
diff --git a/homeassistant/components/demo/text.py b/homeassistant/components/demo/text.py
index fecc1b95cf4..d7174002055 100644
--- a/homeassistant/components/demo/text.py
+++ b/homeassistant/components/demo/text.py
@@ -21,20 +21,17 @@ async def async_setup_entry(
             DemoText(
                 unique_id="text",
                 device_name="Text",
-                icon=None,
                 native_value="Hello world",
             ),
             DemoText(
                 unique_id="password",
                 device_name="Password",
-                icon="mdi:text",
                 native_value="Hello world",
                 mode=TextMode.PASSWORD,
             ),
             DemoText(
                 unique_id="text_1_to_5_char",
                 device_name="Text with 1 to 5 characters",
-                icon="mdi:text",
                 native_value="Hello",
                 native_min=1,
                 native_max=5,
@@ -42,7 +39,6 @@ async def async_setup_entry(
             DemoText(
                 unique_id="text_lowercase",
                 device_name="Text with only lower case characters",
-                icon="mdi:text",
                 native_value="world",
                 pattern=r"[a-z]+",
             ),
@@ -61,7 +57,6 @@ class DemoText(TextEntity):
         self,
         unique_id: str,
         device_name: str,
-        icon: str | None,
         native_value: str | None,
         mode: TextMode = TextMode.TEXT,
         native_max: int | None = None,
@@ -71,7 +66,6 @@ class DemoText(TextEntity):
         """Initialize the Demo text entity."""
         self._attr_unique_id = unique_id
         self._attr_native_value = native_value
-        self._attr_icon = icon
         self._attr_mode = mode
         if native_max is not None:
             self._attr_native_max = native_max
diff --git a/homeassistant/components/demo/time.py b/homeassistant/components/demo/time.py
index 56ab715a7f7..d0ec87386ef 100644
--- a/homeassistant/components/demo/time.py
+++ b/homeassistant/components/demo/time.py
@@ -18,7 +18,7 @@ async def async_setup_entry(
     async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up the demo time platform."""
-    async_add_entities([DemoTime("time", "Time", time(12, 0, 0), "mdi:clock", False)])
+    async_add_entities([DemoTime("time", "Time", time(12, 0, 0), False)])
 
 
 class DemoTime(TimeEntity):
@@ -33,12 +33,10 @@ class DemoTime(TimeEntity):
         unique_id: str,
         device_name: str,
         state: time,
-        icon: str,
         assumed_state: bool,
     ) -> None:
         """Initialize the Demo time entity."""
         self._attr_assumed_state = assumed_state
-        self._attr_icon = icon
         self._attr_native_value = state
         self._attr_unique_id = unique_id
 
diff --git a/homeassistant/components/frontend/__init__.py b/homeassistant/components/frontend/__init__.py
index d168dc2a6aa..09419f2d3bd 100644
--- a/homeassistant/components/frontend/__init__.py
+++ b/homeassistant/components/frontend/__init__.py
@@ -26,6 +26,7 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant, ServiceCall, callback
 from homeassistant.helpers import service
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.icon import async_get_icons
 from homeassistant.helpers.json import json_dumps_sorted
 from homeassistant.helpers.storage import Store
 from homeassistant.helpers.translation import async_get_translations
@@ -344,6 +345,7 @@ def _frontend_root(dev_repo_path: str | None) -> pathlib.Path:
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the serving of the frontend."""
     await async_setup_frontend_storage(hass)
+    websocket_api.async_register_command(hass, websocket_get_icons)
     websocket_api.async_register_command(hass, websocket_get_panels)
     websocket_api.async_register_command(hass, websocket_get_themes)
     websocket_api.async_register_command(hass, websocket_get_translations)
@@ -647,6 +649,28 @@ class ManifestJSONView(HomeAssistantView):
         )
 
 
+@websocket_api.websocket_command(
+    {
+        "type": "frontend/get_icons",
+        vol.Required("category"): vol.In({"entity", "entity_component", "services"}),
+        vol.Optional("integration"): vol.All(cv.ensure_list, [str]),
+    }
+)
+@websocket_api.async_response
+async def websocket_get_icons(
+    hass: HomeAssistant, connection: ActiveConnection, msg: dict[str, Any]
+) -> None:
+    """Handle get icons command."""
+    resources = await async_get_icons(
+        hass,
+        msg["category"],
+        msg.get("integration"),
+    )
+    connection.send_message(
+        websocket_api.result_message(msg["id"], {"resources": resources})
+    )
+
+
 @callback
 @websocket_api.websocket_command({"type": "get_panels"})
 def websocket_get_panels(
diff --git a/homeassistant/components/switch/icons.json b/homeassistant/components/switch/icons.json
new file mode 100644
index 00000000000..00520914b9f
--- /dev/null
+++ b/homeassistant/components/switch/icons.json
@@ -0,0 +1,24 @@
+{
+  "entity_component": {
+    "_": {
+      "default": "mdi:toggle-switch-variant"
+    },
+    "switch": {
+      "default": "mdi:toggle-switch-variant",
+      "state": {
+        "off": "mdi:toggle-switch-variant-off"
+      }
+    },
+    "outlet": {
+      "default": "mdi:power-plug",
+      "state": {
+        "off": "mdi:power-plug-off"
+      }
+    }
+  },
+  "services": {
+    "toggle": "mdi:toggle-switch-variant",
+    "turn_off": "mdi:toggle-switch-variant-off",
+    "turn_on": "mdi:toggle-switch-variant"
+  }
+}
diff --git a/homeassistant/helpers/icon.py b/homeassistant/helpers/icon.py
index 97e0d20927c..3486925b095 100644
--- a/homeassistant/helpers/icon.py
+++ b/homeassistant/helpers/icon.py
@@ -1,7 +1,165 @@
 """Icon helper methods."""
 from __future__ import annotations
 
+import asyncio
+from collections.abc import Iterable
 from functools import lru_cache
+import logging
+from typing import Any
+
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.loader import Integration, async_get_integrations
+from homeassistant.util.json import load_json_object
+
+from .translation import build_resources
+
+ICON_LOAD_LOCK = "icon_load_lock"
+ICON_CACHE = "icon_cache"
+
+_LOGGER = logging.getLogger(__name__)
+
+
+@callback
+def _component_icons_path(component: str, integration: Integration) -> str | None:
+    """Return the icons json file location for a component.
+
+    Ex: components/hue/icons.json
+    If component is just a single file, will return None.
+    """
+    domain = component.rpartition(".")[-1]
+
+    # If it's a component that is just one file, we don't support icons
+    # Example custom_components/my_component.py
+    if integration.file_path.name != domain:
+        return None
+
+    return str(integration.file_path / "icons.json")
+
+
+def _load_icons_files(icons_files: dict[str, str]) -> dict[str, dict[str, Any]]:
+    """Load and parse icons.json files."""
+    return {
+        component: load_json_object(icons_file)
+        for component, icons_file in icons_files.items()
+    }
+
+
+async def _async_get_component_icons(
+    hass: HomeAssistant,
+    components: set[str],
+    integrations: dict[str, Integration],
+) -> dict[str, Any]:
+    """Load icons."""
+    icons: dict[str, Any] = {}
+
+    # Determine files to load
+    files_to_load = {}
+    for loaded in components:
+        domain = loaded.rpartition(".")[-1]
+        if (path := _component_icons_path(loaded, integrations[domain])) is None:
+            icons[loaded] = {}
+        else:
+            files_to_load[loaded] = path
+
+    # Load files
+    if files_to_load and (
+        load_icons_job := hass.async_add_executor_job(_load_icons_files, files_to_load)
+    ):
+        icons |= await load_icons_job
+
+    return icons
+
+
+class _IconsCache:
+    """Cache for icons."""
+
+    __slots__ = ("_hass", "_loaded", "_cache")
+
+    def __init__(self, hass: HomeAssistant) -> None:
+        """Initialize the cache."""
+        self._hass = hass
+        self._loaded: set[str] = set()
+        self._cache: dict[str, dict[str, Any]] = {}
+
+    async def async_fetch(
+        self,
+        category: str,
+        components: set[str],
+    ) -> dict[str, dict[str, Any]]:
+        """Load resources into the cache."""
+        if components_to_load := components - self._loaded:
+            await self._async_load(components_to_load)
+
+        return {
+            component: result
+            for component in components
+            if (result := self._cache.get(category, {}).get(component))
+        }
+
+    async def _async_load(self, components: set[str]) -> None:
+        """Populate the cache for a given set of components."""
+        _LOGGER.debug(
+            "Cache miss for: %s",
+            ", ".join(components),
+        )
+
+        integrations: dict[str, Integration] = {}
+        domains = list({loaded.rpartition(".")[-1] for loaded in components})
+        ints_or_excs = await async_get_integrations(self._hass, domains)
+        for domain, int_or_exc in ints_or_excs.items():
+            if isinstance(int_or_exc, Exception):
+                raise int_or_exc
+            integrations[domain] = int_or_exc
+
+        icons = await _async_get_component_icons(self._hass, components, integrations)
+
+        self._build_category_cache(components, icons)
+        self._loaded.update(components)
+
+    @callback
+    def _build_category_cache(
+        self,
+        components: set[str],
+        icons: dict[str, dict[str, Any]],
+    ) -> None:
+        """Extract resources into the cache."""
+        resource: dict[str, Any] | str
+        categories: set[str] = set()
+        for resource in icons.values():
+            categories.update(resource)
+
+        for category in categories:
+            new_resources = build_resources(icons, components, category)
+            for component, resource in new_resources.items():
+                category_cache: dict[str, Any] = self._cache.setdefault(category, {})
+                category_cache[component] = resource
+
+
+async def async_get_icons(
+    hass: HomeAssistant,
+    category: str,
+    integrations: Iterable[str] | None = None,
+) -> dict[str, Any]:
+    """Return all icons of integrations.
+
+    If integration specified, load it for that one; otherwise default to loaded
+    intgrations.
+    """
+    lock = hass.data.setdefault(ICON_LOAD_LOCK, asyncio.Lock())
+
+    if integrations:
+        components = set(integrations)
+    else:
+        components = {
+            component for component in hass.config.components if "." not in component
+        }
+    async with lock:
+        if ICON_CACHE in hass.data:
+            cache: _IconsCache = hass.data[ICON_CACHE]
+        else:
+            cache = hass.data[ICON_CACHE] = _IconsCache(hass)
+
+    return await cache.async_fetch(category, components)
 
 
 @lru_cache
diff --git a/homeassistant/helpers/translation.py b/homeassistant/helpers/translation.py
index 873d54e7165..f0b20c945db 100644
--- a/homeassistant/helpers/translation.py
+++ b/homeassistant/helpers/translation.py
@@ -129,7 +129,7 @@ def _merge_resources(
     return resources
 
 
-def _build_resources(
+def build_resources(
     translation_strings: dict[str, dict[str, Any]],
     components: set[str],
     category: str,
@@ -304,7 +304,7 @@ class _TranslationCache:
                     translation_strings, components, category
                 )
             else:
-                new_resources = _build_resources(
+                new_resources = build_resources(
                     translation_strings, components, category
                 )
 
diff --git a/script/hassfest/__main__.py b/script/hassfest/__main__.py
index c454c69d141..308c006defc 100644
--- a/script/hassfest/__main__.py
+++ b/script/hassfest/__main__.py
@@ -17,6 +17,7 @@ from . import (
     dependencies,
     dhcp,
     docker,
+    icons,
     json,
     manifest,
     metadata,
@@ -38,6 +39,7 @@ INTEGRATION_PLUGINS = [
     config_schema,
     dependencies,
     dhcp,
+    icons,
     json,
     manifest,
     mqtt,
diff --git a/script/hassfest/icons.py b/script/hassfest/icons.py
new file mode 100644
index 00000000000..e82aed855b2
--- /dev/null
+++ b/script/hassfest/icons.py
@@ -0,0 +1,112 @@
+"""Validate integration icon translation files."""
+from __future__ import annotations
+
+from typing import Any
+
+import orjson
+import voluptuous as vol
+from voluptuous.humanize import humanize_error
+
+import homeassistant.helpers.config_validation as cv
+
+from .model import Config, Integration
+from .translations import translation_key_validator
+
+
+def icon_value_validator(value: Any) -> str:
+    """Validate that the icon is a valid icon."""
+    value = cv.string_with_no_html(value)
+    if not value.startswith("mdi:"):
+        raise vol.Invalid(
+            "The icon needs to be a valid icon from Material Design Icons and start with `mdi:`"
+        )
+    return str(value)
+
+
+def require_default_icon_validator(value: dict) -> dict:
+    """Validate that a default icon is set."""
+    if "_" not in value:
+        raise vol.Invalid(
+            "An entity component needs to have a default icon defined with `_`"
+        )
+    return value
+
+
+def icon_schema(integration_type: str) -> vol.Schema:
+    """Create a icon schema."""
+
+    state_validator = cv.schema_with_slug_keys(
+        icon_value_validator,
+        slug_validator=translation_key_validator,
+    )
+
+    def icon_schema_slug(marker: type[vol.Marker]) -> dict[vol.Marker, Any]:
+        return {
+            marker("default"): icon_value_validator,
+            vol.Optional("state"): state_validator,
+            vol.Optional("state_attributes"): cv.schema_with_slug_keys(
+                {
+                    marker("default"): icon_value_validator,
+                    marker("state"): state_validator,
+                },
+                slug_validator=translation_key_validator,
+            ),
+        }
+
+    base_schema = vol.Schema(
+        {
+            vol.Optional("services"): state_validator,
+        }
+    )
+
+    if integration_type == "entity":
+        return base_schema.extend(
+            {
+                vol.Required("entity_component"): vol.All(
+                    cv.schema_with_slug_keys(
+                        icon_schema_slug(vol.Required),
+                        slug_validator=vol.Any("_", cv.slug),
+                    ),
+                    require_default_icon_validator,
+                )
+            }
+        )
+    return base_schema.extend(
+        {
+            vol.Required("entity"): cv.schema_with_slug_keys(
+                cv.schema_with_slug_keys(
+                    icon_schema_slug(vol.Optional),
+                    slug_validator=translation_key_validator,
+                ),
+                slug_validator=cv.slug,
+            ),
+        }
+    )
+
+
+def validate_icon_file(config: Config, integration: Integration) -> None:  # noqa: C901
+    """Validate icon file for integration."""
+    icons_file = integration.path / "icons.json"
+    if not icons_file.is_file():
+        return
+
+    name = str(icons_file.relative_to(integration.path))
+
+    try:
+        icons = orjson.loads(icons_file.read_text())
+    except ValueError as err:
+        integration.add_error("icons", f"Invalid JSON in {name}: {err}")
+        return
+
+    schema = icon_schema(integration.integration_type)
+
+    try:
+        schema(icons)
+    except vol.Invalid as err:
+        integration.add_error("icons", f"Invalid {name}: {humanize_error(icons, err)}")
+
+
+def validate(integrations: dict[str, Integration], config: Config) -> None:
+    """Handle JSON files inside integrations."""
+    for integration in integrations.values():
+        validate_icon_file(config, integration)
diff --git a/tests/components/frontend/test_init.py b/tests/components/frontend/test_init.py
index e3f0d7f35d5..274d916f10d 100644
--- a/tests/components/frontend/test_init.py
+++ b/tests/components/frontend/test_init.py
@@ -23,7 +23,7 @@ from homeassistant.setup import async_setup_component
 from homeassistant.util import dt as dt_util
 
 from tests.common import MockUser, async_capture_events, async_fire_time_changed
-from tests.typing import WebSocketGenerator
+from tests.typing import MockHAClientWebSocket, WebSocketGenerator
 
 MOCK_THEMES = {
     "happy": {"primary-color": "red", "app-header-background-color": "blue"},
@@ -664,3 +664,76 @@ async def test_static_path_cache(hass: HomeAssistant, mock_http_client) -> None:
     # and again to make sure the cache works
     resp = await mock_http_client.get("/static/does-not-exist", allow_redirects=False)
     assert resp.status == 404
+
+
+async def test_get_icons(hass: HomeAssistant, ws_client: MockHAClientWebSocket) -> None:
+    """Test get_icons command."""
+    with patch(
+        "homeassistant.components.frontend.async_get_icons",
+        side_effect=lambda hass, category, integrations: {},
+    ):
+        await ws_client.send_json(
+            {
+                "id": 5,
+                "type": "frontend/get_icons",
+                "category": "entity_component",
+            }
+        )
+        msg = await ws_client.receive_json()
+
+    assert msg["id"] == 5
+    assert msg["type"] == TYPE_RESULT
+    assert msg["success"]
+    assert msg["result"] == {"resources": {}}
+
+
+async def test_get_icons_for_integrations(
+    hass: HomeAssistant, ws_client: MockHAClientWebSocket
+) -> None:
+    """Test get_icons for integrations command."""
+    with patch(
+        "homeassistant.components.frontend.async_get_icons",
+        side_effect=lambda hass, category, integrations: {
+            integration: {} for integration in integrations
+        },
+    ):
+        await ws_client.send_json(
+            {
+                "id": 5,
+                "type": "frontend/get_icons",
+                "integration": ["frontend", "http"],
+                "category": "entity",
+            }
+        )
+        msg = await ws_client.receive_json()
+
+    assert msg["id"] == 5
+    assert msg["type"] == TYPE_RESULT
+    assert msg["success"]
+    assert set(msg["result"]["resources"]) == {"frontend", "http"}
+
+
+async def test_get_icons_for_single_integration(
+    hass: HomeAssistant, ws_client: MockHAClientWebSocket
+) -> None:
+    """Test get_icons for integration command."""
+    with patch(
+        "homeassistant.components.frontend.async_get_icons",
+        side_effect=lambda hass, category, integrations: {
+            integration: {} for integration in integrations
+        },
+    ):
+        await ws_client.send_json(
+            {
+                "id": 5,
+                "type": "frontend/get_icons",
+                "integration": "http",
+                "category": "entity",
+            }
+        )
+        msg = await ws_client.receive_json()
+
+    assert msg["id"] == 5
+    assert msg["type"] == TYPE_RESULT
+    assert msg["success"]
+    assert msg["result"] == {"resources": {"http": {}}}
diff --git a/tests/components/google_assistant/test_smart_home.py b/tests/components/google_assistant/test_smart_home.py
index bf48564c251..9063a8977f6 100644
--- a/tests/components/google_assistant/test_smart_home.py
+++ b/tests/components/google_assistant/test_smart_home.py
@@ -971,7 +971,6 @@ async def test_device_class_switch(
         None,
         "Demo Sensor",
         state=False,
-        icon="mdi:switch",
         assumed=False,
         device_class=device_class,
     )
diff --git a/tests/helpers/test_icon.py b/tests/helpers/test_icon.py
index a7fe623ea7e..cf329100d75 100644
--- a/tests/helpers/test_icon.py
+++ b/tests/helpers/test_icon.py
@@ -1,18 +1,26 @@
 """Test Home Assistant icon util methods."""
 
+import pathlib
+from unittest.mock import Mock, patch
+
+import pytest
+
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import icon
+from homeassistant.loader import IntegrationNotFound
+from homeassistant.setup import async_setup_component
+
 
 def test_battery_icon() -> None:
     """Test icon generator for battery sensor."""
-    from homeassistant.helpers.icon import icon_for_battery_level
+    assert icon.icon_for_battery_level(None, True) == "mdi:battery-unknown"
+    assert icon.icon_for_battery_level(None, False) == "mdi:battery-unknown"
 
-    assert icon_for_battery_level(None, True) == "mdi:battery-unknown"
-    assert icon_for_battery_level(None, False) == "mdi:battery-unknown"
+    assert icon.icon_for_battery_level(5, True) == "mdi:battery-outline"
+    assert icon.icon_for_battery_level(5, False) == "mdi:battery-alert"
 
-    assert icon_for_battery_level(5, True) == "mdi:battery-outline"
-    assert icon_for_battery_level(5, False) == "mdi:battery-alert"
-
-    assert icon_for_battery_level(100, True) == "mdi:battery-charging-100"
-    assert icon_for_battery_level(100, False) == "mdi:battery"
+    assert icon.icon_for_battery_level(100, True) == "mdi:battery-charging-100"
+    assert icon.icon_for_battery_level(100, False) == "mdi:battery"
 
     iconbase = "mdi:battery"
     for level in range(0, 100, 5):
@@ -20,8 +28,8 @@ def test_battery_icon() -> None:
             "Level: %d. icon: %s, charging: %s"
             % (
                 level,
-                icon_for_battery_level(level, False),
-                icon_for_battery_level(level, True),
+                icon.icon_for_battery_level(level, False),
+                icon.icon_for_battery_level(level, True),
             )
         )
         if level <= 10:
@@ -42,17 +50,183 @@ def test_battery_icon() -> None:
             postfix = "-alert"
         else:
             postfix = ""
-        assert iconbase + postfix == icon_for_battery_level(level, False)
-        assert iconbase + postfix_charging == icon_for_battery_level(level, True)
+        assert iconbase + postfix == icon.icon_for_battery_level(level, False)
+        assert iconbase + postfix_charging == icon.icon_for_battery_level(level, True)
 
 
 def test_signal_icon() -> None:
     """Test icon generator for signal sensor."""
-    from homeassistant.helpers.icon import icon_for_signal_level
+    assert icon.icon_for_signal_level(None) == "mdi:signal-cellular-outline"
+    assert icon.icon_for_signal_level(0) == "mdi:signal-cellular-outline"
+    assert icon.icon_for_signal_level(5) == "mdi:signal-cellular-1"
+    assert icon.icon_for_signal_level(40) == "mdi:signal-cellular-2"
+    assert icon.icon_for_signal_level(80) == "mdi:signal-cellular-3"
+    assert icon.icon_for_signal_level(100) == "mdi:signal-cellular-3"
 
-    assert icon_for_signal_level(None) == "mdi:signal-cellular-outline"
-    assert icon_for_signal_level(0) == "mdi:signal-cellular-outline"
-    assert icon_for_signal_level(5) == "mdi:signal-cellular-1"
-    assert icon_for_signal_level(40) == "mdi:signal-cellular-2"
-    assert icon_for_signal_level(80) == "mdi:signal-cellular-3"
-    assert icon_for_signal_level(100) == "mdi:signal-cellular-3"
+
+def test_load_icons_files(hass: HomeAssistant) -> None:
+    """Test the load icons files function."""
+    file1 = hass.config.path("custom_components", "test", "icons.json")
+    file2 = hass.config.path("custom_components", "test", "invalid.json")
+    assert icon._load_icons_files({"test": file1, "invalid": file2}) == {
+        "test": {
+            "entity": {
+                "switch": {
+                    "something": {
+                        "state": {"away": "mdi:home-outline", "home": "mdi:home"}
+                    }
+                }
+            },
+        },
+        "invalid": {},
+    }
+
+
+@pytest.mark.usefixtures("enable_custom_integrations")
+async def test_get_icons(hass: HomeAssistant) -> None:
+    """Test the get icon helper."""
+    icons = await icon.async_get_icons(hass, "entity")
+    assert icons == {}
+
+    icons = await icon.async_get_icons(hass, "entity_component")
+    assert icons == {}
+
+    # Set up test switch component
+    assert await async_setup_component(hass, "switch", {"switch": {"platform": "test"}})
+
+    # Test getting icons for the entity component
+    icons = await icon.async_get_icons(hass, "entity_component")
+    assert icons["switch"]["_"]["default"] == "mdi:toggle-switch-variant"
+
+    # Test services icons are available
+    icons = await icon.async_get_icons(hass, "services")
+    assert len(icons) == 1
+    assert icons["switch"]["turn_off"] == "mdi:toggle-switch-variant-off"
+
+    # Ensure icons file for platform isn't loaded, as that isn't supported
+    icons = await icon.async_get_icons(hass, "entity")
+    assert icons == {}
+    icons = await icon.async_get_icons(hass, "entity", ["test.switch"])
+    assert icons == {}
+
+    # Load up an custom integration
+    hass.config.components.add("test_package")
+    await hass.async_block_till_done()
+
+    icons = await icon.async_get_icons(hass, "entity")
+    assert len(icons) == 1
+
+    assert icons == {
+        "test_package": {
+            "switch": {
+                "something": {"state": {"away": "mdi:home-outline", "home": "mdi:home"}}
+            }
+        }
+    }
+
+    icons = await icon.async_get_icons(hass, "services")
+    assert len(icons) == 2
+    assert icons["test_package"]["enable_god_mode"] == "mdi:shield"
+
+    # Load another one
+    hass.config.components.add("test_embedded")
+    await hass.async_block_till_done()
+
+    icons = await icon.async_get_icons(hass, "entity")
+    assert len(icons) == 2
+
+    assert icons["test_package"] == {
+        "switch": {
+            "something": {"state": {"away": "mdi:home-outline", "home": "mdi:home"}}
+        }
+    }
+
+    # Test getting non-existing integration
+    with pytest.raises(
+        IntegrationNotFound, match="Integration 'non_existing' not found"
+    ):
+        await icon.async_get_icons(hass, "entity", ["non_existing"])
+
+
+async def test_get_icons_while_loading_components(hass: HomeAssistant) -> None:
+    """Test the get icons helper loads icons."""
+    integration = Mock(file_path=pathlib.Path(__file__))
+    integration.name = "Component 1"
+    hass.config.components.add("component1")
+    load_count = 0
+
+    def mock_load_icons_files(files):
+        """Mock load icon files."""
+        nonlocal load_count
+        load_count += 1
+        return {"component1": {"entity": {"climate": {"test": {"icon": "mdi:home"}}}}}
+
+    with patch(
+        "homeassistant.helpers.icon._component_icons_path",
+        return_value="choochoo.json",
+    ), patch(
+        "homeassistant.helpers.icon._load_icons_files",
+        mock_load_icons_files,
+    ), patch(
+        "homeassistant.helpers.icon.async_get_integrations",
+        return_value={"component1": integration},
+    ):
+        times = 5
+        all_icons = [await icon.async_get_icons(hass, "entity") for _ in range(times)]
+
+    assert all_icons == [
+        {"component1": {"climate": {"test": {"icon": "mdi:home"}}}}
+        for _ in range(times)
+    ]
+    assert load_count == 1
+
+
+async def test_caching(hass: HomeAssistant) -> None:
+    """Test we cache data."""
+    hass.config.components.add("binary_sensor")
+    hass.config.components.add("switch")
+
+    # Patch with same method so we can count invocations
+    with patch(
+        "homeassistant.helpers.icon.build_resources",
+        side_effect=icon.build_resources,
+    ) as mock_build:
+        load1 = await icon.async_get_icons(hass, "entity_component")
+        assert len(mock_build.mock_calls) == 2
+
+        load2 = await icon.async_get_icons(hass, "entity_component")
+        assert len(mock_build.mock_calls) == 2
+
+        assert load1 == load2
+
+        assert load1["binary_sensor"]
+        assert load1["switch"]
+
+    load_switch_only = await icon.async_get_icons(
+        hass, "entity_component", integrations={"switch"}
+    )
+    assert load_switch_only
+    assert list(load_switch_only) == ["switch"]
+
+    load_binary_sensor_only = await icon.async_get_icons(
+        hass, "entity_component", integrations={"binary_sensor"}
+    )
+    assert load_binary_sensor_only
+    assert list(load_binary_sensor_only) == ["binary_sensor"]
+
+    # Check if new loaded component, trigger load
+    hass.config.components.add("media_player")
+    with patch(
+        "homeassistant.helpers.icon._load_icons_files",
+        side_effect=icon._load_icons_files,
+    ) as mock_load:
+        load_sensor_only = await icon.async_get_icons(
+            hass, "entity_component", integrations={"switch"}
+        )
+        assert load_sensor_only
+        assert len(mock_load.mock_calls) == 0
+
+        await icon.async_get_icons(
+            hass, "entity_component", integrations={"media_player"}
+        )
+        assert len(mock_load.mock_calls) == 1
diff --git a/tests/helpers/test_translation.py b/tests/helpers/test_translation.py
index 527e1a07c23..954c9ae7616 100644
--- a/tests/helpers/test_translation.py
+++ b/tests/helpers/test_translation.py
@@ -478,8 +478,8 @@ async def test_caching(hass: HomeAssistant) -> None:
 
     # Patch with same method so we can count invocations
     with patch(
-        "homeassistant.helpers.translation._build_resources",
-        side_effect=translation._build_resources,
+        "homeassistant.helpers.translation.build_resources",
+        side_effect=translation.build_resources,
     ) as mock_build:
         load_sensor_only = await translation.async_get_translations(
             hass, "en", "title", integrations={"sensor"}
diff --git a/tests/testing_config/custom_components/test/icons.json b/tests/testing_config/custom_components/test/icons.json
new file mode 100644
index 00000000000..45ac054199d
--- /dev/null
+++ b/tests/testing_config/custom_components/test/icons.json
@@ -0,0 +1,12 @@
+{
+  "entity": {
+    "switch": {
+      "something": {
+        "state": {
+          "away": "mdi:home-outline",
+          "home": "mdi:home"
+        }
+      }
+    }
+  }
+}
diff --git a/tests/testing_config/custom_components/test_embedded/icons.json b/tests/testing_config/custom_components/test_embedded/icons.json
new file mode 100644
index 00000000000..45ac054199d
--- /dev/null
+++ b/tests/testing_config/custom_components/test_embedded/icons.json
@@ -0,0 +1,12 @@
+{
+  "entity": {
+    "switch": {
+      "something": {
+        "state": {
+          "away": "mdi:home-outline",
+          "home": "mdi:home"
+        }
+      }
+    }
+  }
+}
diff --git a/tests/testing_config/custom_components/test_package/icons.json b/tests/testing_config/custom_components/test_package/icons.json
new file mode 100644
index 00000000000..e82168d7a1a
--- /dev/null
+++ b/tests/testing_config/custom_components/test_package/icons.json
@@ -0,0 +1,15 @@
+{
+  "entity": {
+    "switch": {
+      "something": {
+        "state": {
+          "away": "mdi:home-outline",
+          "home": "mdi:home"
+        }
+      }
+    }
+  },
+  "services": {
+    "enable_god_mode": "mdi:shield"
+  }
+}