diff --git a/homeassistant/components/telegram_bot/__init__.py b/homeassistant/components/telegram_bot/__init__.py
index 4fdb87f9fa6..f744265e1c2 100644
--- a/homeassistant/components/telegram_bot/__init__.py
+++ b/homeassistant/components/telegram_bot/__init__.py
@@ -1128,6 +1128,7 @@ class BaseTelegramBotEntity:
             ATTR_MSGID: message.message_id,
             ATTR_CHAT_ID: message.chat.id,
             ATTR_DATE: message.date,
+            ATTR_MESSAGE_THREAD_ID: message.message_thread_id,
         }
         if filters.COMMAND.filter(message):
             # This is a command message - set event type to command and split data into command and args