diff --git a/federation/entities/activitypub/entities.py b/federation/entities/activitypub/entities.py
index cb04f50..6b4cda3 100644
--- a/federation/entities/activitypub/entities.py
+++ b/federation/entities/activitypub/entities.py
@@ -1,7 +1,7 @@
 import logging
 import re
 import uuid
-from typing import Dict, List
+from typing import Dict, List, Set
 
 from federation.entities.activitypub.constants import (
     CONTEXTS_DEFAULT, CONTEXT_MANUALLY_APPROVES_FOLLOWERS, CONTEXT_SENSITIVE, CONTEXT_HASHTAG,
@@ -109,6 +109,20 @@ class ActivitypubNoteMixin(AttachImagesMixin, CleanContentMixin, ActivitypubEnti
             tags.append(_tag)
         return tags
 
+    def extract_mentions(self) -> Set:
+        """
+        Extract mentions from the source object.
+        """
+        if not isinstance(self._source_object, dict):
+            return set()
+        _mentions = set()
+        source = self._source_object.get('object') if isinstance(self._source_object.get('object'), dict) else \
+            self._source_object
+        for tag in source.get('tag', []):
+            if tag.get('type') == "Mention" and tag.get('href'):
+                _mentions.add(tag.get('href'))
+        return _mentions
+
     def to_as2(self) -> Dict:
         as2 = {
             "@context": CONTEXTS_DEFAULT + [
diff --git a/federation/entities/diaspora/mixins.py b/federation/entities/diaspora/mixins.py
index fcf41cc..36e98c5 100644
--- a/federation/entities/diaspora/mixins.py
+++ b/federation/entities/diaspora/mixins.py
@@ -1,4 +1,5 @@
 import re
+from typing import Set
 
 from Crypto.PublicKey import RSA
 from lxml import etree
@@ -14,7 +15,7 @@ class DiasporaEntityMixin(BaseEntity):
     # Normally outbound document is generated from entity. Store one here if at some point we already have a doc
     outbound_doc = None
 
-    def extract_mentions(self):
+    def extract_mentions(self) -> Set:
         """
         Extract mentions from an entity with ``raw_content``.
 
diff --git a/federation/entities/mixins.py b/federation/entities/mixins.py
index 9dc8267..51b9cac 100644
--- a/federation/entities/mixins.py
+++ b/federation/entities/mixins.py
@@ -1,7 +1,7 @@
 import datetime
 import importlib
 import warnings
-from typing import List, Set
+from typing import List, Set, Union, Dict
 
 from commonmark import commonmark
 
@@ -16,7 +16,7 @@ class BaseEntity:
     _receivers: List = None
     _source_protocol: str = ""
     # Contains the original object from payload as a string
-    _source_object: str = None
+    _source_object: Union[str, Dict] = None
     _sender_key: str = ""
     # ActivityType
     activity: ActivityType = None
@@ -50,7 +50,7 @@ class BaseEntity:
         klass = getattr(entities, f"{protocol.title()}{self.__class__.__name__}")
         return klass.from_base(self)
 
-    def extract_mentions(self):
+    def extract_mentions(self) -> Set:
         return set()
 
     def validate(self):
@@ -178,10 +178,12 @@ class CreatedAtMixin(BaseEntity):
 
 class RawContentMixin(BaseEntity):
     _media_type: str = "text/markdown"
+    _mentions: List = None
     _rendered_content: str = ""
     raw_content: str = ""
 
     def __init__(self, *args, **kwargs):
+        self._mentions = []
         super().__init__(*args, **kwargs)
         self._required += ["raw_content"]
 
diff --git a/federation/tests/entities/activitypub/test_mappers.py b/federation/tests/entities/activitypub/test_mappers.py
index 6cbbb20..544eb91 100644
--- a/federation/tests/entities/activitypub/test_mappers.py
+++ b/federation/tests/entities/activitypub/test_mappers.py
@@ -11,7 +11,7 @@ from federation.tests.fixtures.payloads import (
     ACTIVITYPUB_FOLLOW, ACTIVITYPUB_PROFILE, ACTIVITYPUB_PROFILE_INVALID, ACTIVITYPUB_UNDO_FOLLOW, ACTIVITYPUB_POST,
     ACTIVITYPUB_COMMENT, ACTIVITYPUB_RETRACTION, ACTIVITYPUB_SHARE, ACTIVITYPUB_RETRACTION_SHARE,
     ACTIVITYPUB_POST_IMAGES, ACTIVITYPUB_POST_WITH_SOURCE_MARKDOWN, ACTIVITYPUB_POST_WITH_TAGS,
-    ACTIVITYPUB_POST_WITH_SOURCE_BBCODE)
+    ACTIVITYPUB_POST_WITH_SOURCE_BBCODE, ACTIVITYPUB_POST_WITH_MENTIONS)
 from federation.types import UserType, ReceiverVariant
 
 
@@ -83,6 +83,15 @@ class TestActivitypubEntityMappersReceive:
         assert isinstance(post, Post)
         assert post.raw_content == 'boom #test'
 
+    def test_message_to_objects_simple_post__with_mentions(self):
+        entities = message_to_objects(ACTIVITYPUB_POST_WITH_MENTIONS, "https://mastodon.social/users/jaywink")
+        assert len(entities) == 1
+        post = entities[0]
+        assert isinstance(post, ActivitypubPost)
+        assert isinstance(post, Post)
+        assert len(post._mentions) == 1
+        assert list(post._mentions)[0] == "https://dev3.jasonrobinson.me/u/jaywink/"
+
     def test_message_to_objects_simple_post__with_source__bbcode(self):
         entities = message_to_objects(ACTIVITYPUB_POST_WITH_SOURCE_BBCODE, "https://diaspodon.fr/users/jaywink")
         assert len(entities) == 1
diff --git a/federation/tests/fixtures/payloads/activitypub.py b/federation/tests/fixtures/payloads/activitypub.py
index 9adfa05..409dbdf 100644
--- a/federation/tests/fixtures/payloads/activitypub.py
+++ b/federation/tests/fixtures/payloads/activitypub.py
@@ -341,6 +341,50 @@ ACTIVITYPUB_POST_WITH_TAGS = {
   'signatureValue': 'SjDACS7Z/Cb1SEC3AtxEokID5SHAYl7kpys/hhmaRbpXuFKCxfj2P9BmH8QhLnuam3sENZlrnBOcB5NlcBhIfwo/Xh242RZBmPQf+edTVYVCe1j19dihcftNCHtnqAcKwp/51dNM/OlKu2730FrwvOUXVIPtB7iVqkseO9TRzDYIDj+zBTksnR/NAYtq6SUpmefXfON0uW3N3Uq6PGfExJaS+aeqRf8cPGkZFSIUQZwOLXbIpb7BFjJ1+y1OMOAJueqvikUprAit3v6BiNWurAvSQpC7WWMFUKyA79/xtkO9kIPA/Q4C9ryqdzxZJ0jDhXiaIIQj2JZfIADdjLZHJA=='}
 }
 
+ACTIVITYPUB_POST_WITH_MENTIONS = {'@context': ['https://www.w3.org/ns/activitystreams',
+  {'ostatus': 'http://ostatus.org#',
+   'atomUri': 'ostatus:atomUri',
+   'inReplyToAtomUri': 'ostatus:inReplyToAtomUri',
+   'conversation': 'ostatus:conversation',
+   'sensitive': 'as:sensitive'}],
+ 'id': 'https://mastodon.social/users/jaywink/statuses/102750454691863505/activity',
+ 'type': 'Create',
+ 'actor': 'https://mastodon.social/users/jaywink',
+ 'published': '2019-09-07T09:11:54Z',
+ 'to': ['https://www.w3.org/ns/activitystreams#Public'],
+ 'cc': ['https://mastodon.social/users/jaywink/followers',
+  'https://dev3.jasonrobinson.me/u/jaywink/'],
+ 'object': {'id': 'https://mastodon.social/users/jaywink/statuses/102750454691863505',
+  'type': 'Note',
+  'summary': None,
+  'inReplyTo': None,
+  'published': '2019-09-07T09:11:54Z',
+  'url': 'https://mastodon.social/@jaywink/102750454691863505',
+  'attributedTo': 'https://mastodon.social/users/jaywink',
+  'to': ['https://www.w3.org/ns/activitystreams#Public'],
+  'cc': ['https://mastodon.social/users/jaywink/followers',
+   'https://dev3.jasonrobinson.me/u/jaywink/'],
+  'sensitive': False,
+  'atomUri': 'https://mastodon.social/users/jaywink/statuses/102750454691863505',
+  'inReplyToAtomUri': None,
+  'conversation': 'tag:mastodon.social,2019-09-07:objectId=123339599:objectType=Conversation',
+  'content': '<p><span class="h-card"><a href="https://dev3.jasonrobinson.me/u/jaywink/" class="u-url mention">@<span>jaywink</span></a></span> need a mention payload - here!</p>',
+  'contentMap': {'en': '<p><span class="h-card"><a href="https://dev3.jasonrobinson.me/u/jaywink/" class="u-url mention">@<span>jaywink</span></a></span> need a mention payload - here!</p>'},
+  'attachment': [],
+  'tag': [{'type': 'Mention',
+    'href': 'https://dev3.jasonrobinson.me/u/jaywink/',
+    'name': '@jaywink@dev3.jasonrobinson.me'}],
+  'replies': {'id': 'https://mastodon.social/users/jaywink/statuses/102750454691863505/replies',
+   'type': 'Collection',
+   'first': {'type': 'CollectionPage',
+    'next': 'https://mastodon.social/users/jaywink/statuses/102750454691863505/replies?only_other_accounts=true&page=true',
+    'partOf': 'https://mastodon.social/users/jaywink/statuses/102750454691863505/replies',
+    'items': []}}},
+ 'signature': {'type': 'RsaSignature2017',
+  'creator': 'https://mastodon.social/users/jaywink#main-key',
+  'created': '2019-09-07T09:11:54Z',
+  'signatureValue': 'FOO'}}
+
 ACTIVITYPUB_POST_WITH_SOURCE_MARKDOWN = {
   '@context': ['https://www.w3.org/ns/activitystreams',
   {'ostatus': 'http://ostatus.org#',