diff --git a/homeassistant/components/person/__init__.py b/homeassistant/components/person/__init__.py
index cf4059dcc6b..87b158f80c3 100644
--- a/homeassistant/components/person/__init__.py
+++ b/homeassistant/components/person/__init__.py
@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from collections.abc import Callable, Mapping
+from collections.abc import Callable
 import logging
 from typing import Any, Self
 
@@ -17,7 +17,6 @@ from homeassistant.components.device_tracker import (
 )
 from homeassistant.const import (
     ATTR_EDITABLE,
-    ATTR_ENTITY_ID,
     ATTR_GPS_ACCURACY,
     ATTR_ID,
     ATTR_LATITUDE,
@@ -246,16 +245,20 @@ class PersonStorageCollection(collection.DictStorageCollection):
         )
 
     @callback
-    def _entity_registry_filter(self, event_data: Mapping[str, Any]) -> bool:
+    def _entity_registry_filter(
+        self, event_data: er.EventEntityRegistryUpdatedData
+    ) -> bool:
         """Filter entity registry events."""
         return (
             event_data["action"] == "remove"
-            and split_entity_id(event_data[ATTR_ENTITY_ID])[0] == "device_tracker"
+            and split_entity_id(event_data["entity_id"])[0] == "device_tracker"
         )
 
-    async def _entity_registry_updated(self, event: Event) -> None:
+    async def _entity_registry_updated(
+        self, event: Event[er.EventEntityRegistryUpdatedData]
+    ) -> None:
         """Handle entity registry updated."""
-        entity_id = event.data[ATTR_ENTITY_ID]
+        entity_id = event.data["entity_id"]
         for person in list(self.data.values()):
             if entity_id not in person[CONF_DEVICE_TRACKERS]:
                 continue
diff --git a/homeassistant/config_entries.py b/homeassistant/config_entries.py
index adbb99b9d3c..d7ffd697a2f 100644
--- a/homeassistant/config_entries.py
+++ b/homeassistant/config_entries.py
@@ -2507,7 +2507,9 @@ class EntityRegistryDisabledHandler:
         )
 
     @callback
-    def _handle_entry_updated(self, event: Event) -> None:
+    def _handle_entry_updated(
+        self, event: Event[entity_registry.EventEntityRegistryUpdatedData]
+    ) -> None:
         """Handle entity registry entry update."""
         if self.registry is None:
             self.registry = entity_registry.async_get(self.hass)
@@ -2574,7 +2576,9 @@ class EntityRegistryDisabledHandler:
 
 
 @callback
-def _handle_entry_updated_filter(event_data: Mapping[str, Any]) -> bool:
+def _handle_entry_updated_filter(
+    event_data: entity_registry.EventEntityRegistryUpdatedData,
+) -> bool:
     """Handle entity registry entry update filter.
 
     Only handle changes to "disabled_by".
diff --git a/homeassistant/helpers/device_registry.py b/homeassistant/helpers/device_registry.py
index df2c5b57395..2142cae854a 100644
--- a/homeassistant/helpers/device_registry.py
+++ b/homeassistant/helpers/device_registry.py
@@ -1221,12 +1221,16 @@ def async_setup_cleanup(hass: HomeAssistant, dev_reg: DeviceRegistry) -> None:
     )
 
     @callback
-    def _async_entity_registry_changed(event: Event) -> None:
+    def _async_entity_registry_changed(
+        event: Event[entity_registry.EventEntityRegistryUpdatedData],
+    ) -> None:
         """Handle entity updated or removed dispatch."""
         debounced_cleanup.async_schedule_call()
 
     @callback
-    def entity_registry_changed_filter(event_data: Mapping[str, Any]) -> bool:
+    def entity_registry_changed_filter(
+        event_data: entity_registry.EventEntityRegistryUpdatedData,
+    ) -> bool:
         """Handle entity updated or removed filter."""
         if (
             event_data["action"] == "update"
diff --git a/homeassistant/helpers/entity_registry.py b/homeassistant/helpers/entity_registry.py
index 1197e79ad8d..727dbda9c2d 100644
--- a/homeassistant/helpers/entity_registry.py
+++ b/homeassistant/helpers/entity_registry.py
@@ -47,6 +47,7 @@ from homeassistant.core import (
 from homeassistant.exceptions import MaxLengthExceeded
 from homeassistant.loader import async_suggest_report_issue
 from homeassistant.util import slugify, uuid as uuid_util
+from homeassistant.util.event_type import EventType
 from homeassistant.util.json import format_unserializable_data
 from homeassistant.util.read_only_dict import ReadOnlyDict
 
@@ -65,7 +66,9 @@ if TYPE_CHECKING:
 T = TypeVar("T")
 
 DATA_REGISTRY = "entity_registry"
-EVENT_ENTITY_REGISTRY_UPDATED = "entity_registry_updated"
+EVENT_ENTITY_REGISTRY_UPDATED: EventType[EventEntityRegistryUpdatedData] = EventType(
+    "entity_registry_updated"
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -879,7 +882,10 @@ class EntityRegistry(BaseRegistry):
         self.async_schedule_save()
 
         self.hass.bus.async_fire(
-            EVENT_ENTITY_REGISTRY_UPDATED, {"action": "create", "entity_id": entity_id}
+            EVENT_ENTITY_REGISTRY_UPDATED,
+            _EventEntityRegistryUpdatedData_CreateRemove(
+                action="create", entity_id=entity_id
+            ),
         )
 
         return entry
@@ -901,7 +907,10 @@ class EntityRegistry(BaseRegistry):
             unique_id=entity.unique_id,
         )
         self.hass.bus.async_fire(
-            EVENT_ENTITY_REGISTRY_UPDATED, {"action": "remove", "entity_id": entity_id}
+            EVENT_ENTITY_REGISTRY_UPDATED,
+            _EventEntityRegistryUpdatedData_CreateRemove(
+                action="remove", entity_id=entity_id
+            ),
         )
         self.async_schedule_save()
 
@@ -1082,7 +1091,7 @@ class EntityRegistry(BaseRegistry):
 
         self.async_schedule_save()
 
-        data: dict[str, str | dict[str, Any]] = {
+        data: _EventEntityRegistryUpdatedData_Update = {
             "action": "update",
             "entity_id": entity_id,
             "changes": old_values,
@@ -1531,7 +1540,7 @@ def _async_setup_entity_restore(hass: HomeAssistant, registry: EntityRegistry) -
         return bool(event_data["action"] == "remove")
 
     @callback
-    def cleanup_restored_states(event: Event) -> None:
+    def cleanup_restored_states(event: Event[EventEntityRegistryUpdatedData]) -> None:
         """Clean up restored states."""
         state = hass.states.get(event.data["entity_id"])