diff --git a/zerver/lib/actions.py b/zerver/lib/actions.py
index 676f426585..5807293441 100644
--- a/zerver/lib/actions.py
+++ b/zerver/lib/actions.py
@@ -892,7 +892,7 @@ def do_deactivate_user(user_profile: UserProfile,
         for profile in bot_profiles:
             do_deactivate_user(profile, acting_user=acting_user, _cascade=False)
 
-def do_deactivate_stream(stream: Stream, log: bool=True) -> None:
+def do_deactivate_stream(stream: Stream, log: bool=True, acting_user: Optional[UserProfile]=None) -> None:
 
     # Get the affected user ids *before* we deactivate everybody.
     affected_user_ids = can_access_stream_user_ids(stream)
@@ -940,6 +940,11 @@ def do_deactivate_stream(stream: Stream, log: bool=True) -> None:
                  streams=[stream_dict])
     send_event(stream.realm, event, affected_user_ids)
 
+    event_time = timezone_now()
+    RealmAuditLog.objects.create(realm=stream.realm, acting_user=acting_user,
+                                 modified_stream=stream, event_type=RealmAuditLog.STREAM_DEACTIVATED,
+                                 event_time=event_time)
+
 def send_user_email_update_event(user_profile: UserProfile) -> None:
     payload = dict(user_id=user_profile.id,
                    new_email=user_profile.email)
@@ -3113,7 +3118,7 @@ def bulk_remove_subscriptions(users: Iterable[UserProfile],
     if new_vacant_private_streams:
         # Deactivate any newly-vacant private streams
         for stream in new_vacant_private_streams:
-            do_deactivate_stream(stream)
+            do_deactivate_stream(stream, acting_user=acting_user)
 
     return (
         [(sub.user_profile, stream) for (sub, stream) in subs_to_deactivate],
diff --git a/zerver/management/commands/merge_streams.py b/zerver/management/commands/merge_streams.py
index 93bce61760..ca7b7d8429 100644
--- a/zerver/management/commands/merge_streams.py
+++ b/zerver/management/commands/merge_streams.py
@@ -69,7 +69,7 @@ class Command(ZulipBaseCommand):
             bulk_remove_subscriptions([sub.user_profile for sub in subs_to_deactivate],
                                       [stream_to_destroy],
                                       self.get_client(), acting_user=None)
-        do_deactivate_stream(stream_to_destroy)
+        do_deactivate_stream(stream_to_destroy, acting_user=None)
         if len(users_to_activate) > 0:
             print(f"Adding {len(users_to_activate)} subscriptions")
             bulk_add_subscriptions([stream_to_keep], users_to_activate)
diff --git a/zerver/models.py b/zerver/models.py
index 43fed32556..ee74e239ff 100644
--- a/zerver/models.py
+++ b/zerver/models.py
@@ -2744,6 +2744,7 @@ class AbstractRealmAuditLog(models.Model):
     CUSTOMER_SWITCHED_FROM_MONTHLY_TO_ANNUAL_PLAN = 503
 
     STREAM_CREATED = 601
+    STREAM_DEACTIVATED = 602
 
     event_type: int = models.PositiveSmallIntegerField()
 
diff --git a/zerver/tests/test_audit_log.py b/zerver/tests/test_audit_log.py
index 808fa72bd5..d6f19ed90c 100644
--- a/zerver/tests/test_audit_log.py
+++ b/zerver/tests/test_audit_log.py
@@ -18,6 +18,7 @@ from zerver.lib.actions import (
     do_change_user_role,
     do_create_user,
     do_deactivate_realm,
+    do_deactivate_stream,
     do_deactivate_user,
     do_reactivate_realm,
     do_reactivate_user,
@@ -222,3 +223,15 @@ class TestRealmAuditLog(ZulipTestCase):
         self.assertEqual(RealmAuditLog.objects.filter(realm=realm, event_type=RealmAuditLog.STREAM_CREATED,
                                                       event_time__gte=now, acting_user=user,
                                                       modified_stream=stream).count(), 1)
+
+    def test_deactivate_stream(self) -> None:
+        now = timezone_now()
+        realm = get_realm('zulip')
+        user = self.example_user('hamlet')
+        stream_name = 'test'
+        stream = self.make_stream(stream_name, realm)
+        do_deactivate_stream(stream, acting_user=user)
+        self.assertEqual(RealmAuditLog.objects.filter(realm=realm, event_type=RealmAuditLog.STREAM_DEACTIVATED,
+                                                      event_time__gte=now, acting_user=user,
+                                                      modified_stream=stream).count(), 1)
+        self.assertEqual(stream.deactivated, True)
diff --git a/zerver/views/streams.py b/zerver/views/streams.py
index 43e32a7b05..5e7d98d017 100644
--- a/zerver/views/streams.py
+++ b/zerver/views/streams.py
@@ -137,7 +137,7 @@ def deactivate_stream_backend(request: HttpRequest,
                               user_profile: UserProfile,
                               stream_id: int) -> HttpResponse:
     stream = access_stream_for_delete_or_update(user_profile, stream_id)
-    do_deactivate_stream(stream)
+    do_deactivate_stream(stream, acting_user=user_profile)
     return json_success()
 
 @require_realm_admin