diff --git a/homeassistant/components/telegram/notify.py b/homeassistant/components/telegram/notify.py
index 6b9cf43bf71..eff5d3b5635 100644
--- a/homeassistant/components/telegram/notify.py
+++ b/homeassistant/components/telegram/notify.py
@@ -24,7 +24,8 @@ from homeassistant.components.telegram_bot import (
 )
 from homeassistant.const import ATTR_LOCATION
 from homeassistant.core import HomeAssistant
-from homeassistant.helpers.reload import setup_reload_service
+from homeassistant.helpers import issue_registry as ir
+from homeassistant.helpers.reload import async_setup_reload_service
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
 from . import DOMAIN, PLATFORMS
@@ -45,14 +46,25 @@ PLATFORM_SCHEMA = NOTIFY_PLATFORM_SCHEMA.extend(
 )
 
 
-def get_service(
+async def async_get_service(
     hass: HomeAssistant,
     config: ConfigType,
     discovery_info: DiscoveryInfoType | None = None,
 ) -> TelegramNotificationService:
     """Get the Telegram notification service."""
 
-    setup_reload_service(hass, DOMAIN, PLATFORMS)
+    ir.async_create_issue(
+        hass,
+        DOMAIN,
+        "migrate_notify",
+        breaks_in_ha_version="2026.5.0",
+        is_fixable=False,
+        translation_key="migrate_notify",
+        severity=ir.IssueSeverity.WARNING,
+        learn_more_url="https://www.home-assistant.io/integrations/telegram_bot#notifiers",
+    )
+
+    await async_setup_reload_service(hass, DOMAIN, PLATFORMS)
     chat_id = config.get(CONF_CHAT_ID)
     return TelegramNotificationService(hass, chat_id)
 
diff --git a/homeassistant/components/telegram/strings.json b/homeassistant/components/telegram/strings.json
index 054fc10e2a5..db697256b88 100644
--- a/homeassistant/components/telegram/strings.json
+++ b/homeassistant/components/telegram/strings.json
@@ -1,4 +1,10 @@
 {
+  "issues": {
+    "migrate_notify": {
+      "description": "The Telegram `notify` service has been migrated. A new `notify` entity per chat ID is available now.\n\nUpdate all affected automations to use the new `notify.send_message` action exposed by these new entities and then restart Home Assistant.",
+      "title": "Migration of Telegram notify service"
+    }
+  },
   "services": {
     "reload": {
       "description": "Reloads telegram notify services.",
diff --git a/tests/components/telegram/test_notify.py b/tests/components/telegram/test_notify.py
index e1daf4da074..67cfdd8b76a 100644
--- a/tests/components/telegram/test_notify.py
+++ b/tests/components/telegram/test_notify.py
@@ -7,12 +7,15 @@ from homeassistant.components import notify
 from homeassistant.components.telegram import DOMAIN
 from homeassistant.const import SERVICE_RELOAD
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers import issue_registry as ir
 from homeassistant.setup import async_setup_component
 
 from tests.common import get_fixture_path
 
 
-async def test_reload_notify(hass: HomeAssistant) -> None:
+async def test_reload_notify(
+    hass: HomeAssistant, issue_registry: ir.IssueRegistry
+) -> None:
     """Verify we can reload the notify service."""
 
     with patch("homeassistant.components.telegram_bot.async_setup", return_value=True):
@@ -45,3 +48,9 @@ async def test_reload_notify(hass: HomeAssistant) -> None:
 
     assert not hass.services.has_service(notify.DOMAIN, DOMAIN)
     assert hass.services.has_service(notify.DOMAIN, "telegram_reloaded")
+
+    assert issue_registry.async_get_issue(
+        domain=DOMAIN,
+        issue_id="migrate_notify",
+    )
+    assert len(issue_registry.issues) == 1