diff --git a/CHANGELOG.md b/CHANGELOG.md
index 933d78ae..909d578c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@
 - TBD
 
 ## New features
-- TBD
+- [Telegram] Added new telegram_thread_id setting for sending alerts to different threads of supergroup/forum. - [#1319](https://github.com/jertel/elastalert2/pull/1319) - @polshe-v
 
 ## Other changes
 - Update setup.py & requirements.txt & requirements-dev.txt - [#1316](https://github.com/jertel/elastalert2/pull/1316) - @nsano-rururu
diff --git a/docs/source/ruletypes.rst b/docs/source/ruletypes.rst
index 26709a44..64309e70 100644
--- a/docs/source/ruletypes.rst
+++ b/docs/source/ruletypes.rst
@@ -3688,6 +3688,8 @@ Optional:
 
 ``telegram_parse_mode``: The Telegram parsing mode, which determines the format of the alert text body. Possible values are ``markdown``, ``markdownV2``, ``html``. Defaults to ``markdown``.
 
+``telegram_thread_id``: Unique identifier for the target thread of supergroup/forum using telegram message_thread_id (Optional, positive integer value, no default).
+
 Example usage::
 
     alert:
diff --git a/elastalert/alerters/telegram.py b/elastalert/alerters/telegram.py
index 48632537..18c543c3 100644
--- a/elastalert/alerters/telegram.py
+++ b/elastalert/alerters/telegram.py
@@ -23,6 +23,7 @@ def __init__(self, rule):
         self.telegram_proxy_login = self.rule.get('telegram_proxy_login', None)
         self.telegram_proxy_password = self.rule.get('telegram_proxy_pass', None)
         self.telegram_parse_mode = self.rule.get('telegram_parse_mode', 'markdown')
+        self.telegram_thread_id = self.rule.get('telegram_thread_id', None)
 
     def alert(self, matches):
         if self.telegram_parse_mode != 'html':
@@ -49,7 +50,8 @@ def alert(self, matches):
             'chat_id': self.telegram_room_id,
             'text': body,
             'parse_mode': self.telegram_parse_mode,
-            'disable_web_page_preview': True
+            'disable_web_page_preview': True,
+            'message_thread_id': self.telegram_thread_id
         }
 
         try:
diff --git a/elastalert/schema.yaml b/elastalert/schema.yaml
index a41c775d..666d06b0 100644
--- a/elastalert/schema.yaml
+++ b/elastalert/schema.yaml
@@ -773,6 +773,7 @@ properties:
   telegram_proxy_login: {type: string}
   telegram_proxy_pass: {type: string}
   telegram_parse_mode: {type: string, enum: ['markdown', 'markdownV2', 'html']}
+  telegram_thread_id: {type: number}
 
   ### Tencent SMS
   tencent_sms_secret_id: {type: string}
diff --git a/tests/alerters/telegram_test.py b/tests/alerters/telegram_test.py
index 66d0a1a4..748c72bb 100644
--- a/tests/alerters/telegram_test.py
+++ b/tests/alerters/telegram_test.py
@@ -12,6 +12,46 @@
 from elastalert.util import EAException
 
 
+def test_telegram_thread_id(caplog):
+    caplog.set_level(logging.INFO)
+    rule = {
+        'name': 'Test Telegram Rule',
+        'type': 'any',
+        'telegram_bot_token': 'xxxxx1',
+        'telegram_room_id': 'xxxxx2',
+        'telegram_thread_id': 2,
+        'alert': []
+    }
+    rules_loader = FileRulesLoader({})
+    rules_loader.load_modules(rule)
+    alert = TelegramAlerter(rule)
+    match = {
+        '@timestamp': '2021-01-01T00:00:00',
+        'somefield': 'foobarbaz'
+    }
+    with mock.patch('requests.post') as mock_post_request:
+        alert.alert([match])
+    expected_data = {
+        'chat_id': rule['telegram_room_id'],
+        'text': '⚠ *Test Telegram Rule* ⚠ ```\nTest Telegram Rule\n\n@timestamp: 2021-01-01T00:00:00\nsomefield: foobarbaz\n ```',
+        'parse_mode': 'markdown',
+        'disable_web_page_preview': True,
+        'message_thread_id': 2
+    }
+
+    mock_post_request.assert_called_once_with(
+        'https://api.telegram.org/botxxxxx1/sendMessage',
+        data=mock.ANY,
+        headers={'content-type': 'application/json'},
+        proxies=None,
+        auth=None
+    )
+
+    actual_data = json.loads(mock_post_request.call_args_list[0][1]['data'])
+    assert expected_data == actual_data
+    assert ('elastalert', logging.INFO, 'Alert sent to Telegram room xxxxx2') == caplog.record_tuples[0]
+
+
 def test_telegram_markdown(caplog):
     caplog.set_level(logging.INFO)
     rule = {
@@ -34,7 +74,8 @@ def test_telegram_markdown(caplog):
         'chat_id': rule['telegram_room_id'],
         'text': '⚠ *Test Telegram Rule* ⚠ ```\nTest Telegram Rule\n\n@timestamp: 2021-01-01T00:00:00\nsomefield: foobarbaz\n ```',
         'parse_mode': 'markdown',
-        'disable_web_page_preview': True
+        'disable_web_page_preview': True,
+        'message_thread_id': None
     }
 
     mock_post_request.assert_called_once_with(
@@ -73,7 +114,8 @@ def test_telegram_html(caplog):
         'chat_id': rule['telegram_room_id'],
         'text': '⚠ Test Telegram Rule ⚠ \nTest Telegram Rule\n\n@timestamp: 2021-01-01T00:00:00\nsomefield: foobarbaz\n',
         'parse_mode': 'html',
-        'disable_web_page_preview': True
+        'disable_web_page_preview': True,
+        'message_thread_id': None
     }
 
     mock_post_request.assert_called_once_with(
@@ -113,7 +155,8 @@ def test_telegram_proxy():
         'chat_id': rule['telegram_room_id'],
         'text': '⚠ *Test Telegram Rule* ⚠ ```\nTest Telegram Rule\n\n@timestamp: 2021-01-01T00:00:00\nsomefield: foobarbaz\n ```',
         'parse_mode': 'markdown',
-        'disable_web_page_preview': True
+        'disable_web_page_preview': True,
+        'message_thread_id': None
     }
 
     mock_post_request.assert_called_once_with(
@@ -150,7 +193,8 @@ def test_telegram_text_maxlength():
         'text': '⚠ *Test Telegram Rule' + ('a' * 3979) +
                 '\n⚠ *message was cropped according to telegram limits!* ⚠ ```',
         'parse_mode': 'markdown',
-        'disable_web_page_preview': True
+        'disable_web_page_preview': True,
+        'message_thread_id': None
     }
 
     mock_post_request.assert_called_once_with(
@@ -275,7 +319,8 @@ def test_telegram_matchs():
                 '----------------------------------------\n' +
                 ' ```',
         'parse_mode': 'markdown',
-        'disable_web_page_preview': True
+        'disable_web_page_preview': True,
+        'message_thread_id': None
     }
 
     mock_post_request.assert_called_once_with(