diff --git a/changelog.d/3-bug-fixes/WPB-5603 b/changelog.d/3-bug-fixes/WPB-5603
new file mode 100644
index 0000000000..c7e8354eb8
--- /dev/null
+++ b/changelog.d/3-bug-fixes/WPB-5603
@@ -0,0 +1 @@
+Fix a bug where non-team conversation members that are remote would not get a `conversation.member-leave` event
diff --git a/integration/test/API/Galley.hs b/integration/test/API/Galley.hs
index 66755cc8e7..4de181b0c9 100644
--- a/integration/test/API/Galley.hs
+++ b/integration/test/API/Galley.hs
@@ -3,6 +3,7 @@
 
 module API.Galley where
 
+import API.Common
 import Control.Lens hiding ((.=))
 import Control.Monad.Reader
 import Data.Aeson qualified as Aeson
@@ -100,6 +101,21 @@ deleteTeamConversation tid qcnv user = do
   req <- baseRequest user Galley Versioned path
   submit "DELETE" req
 
+deleteTeamMember ::
+  ( HasCallStack,
+    MakesValue owner,
+    MakesValue member
+  ) =>
+  String ->
+  owner ->
+  member ->
+  App Response
+deleteTeamMember tid owner mem = do
+  memId <- objId mem
+  let path = joinHttpPath ["teams", tid, "members", memId]
+  req <- baseRequest owner Galley Versioned path
+  submit "DELETE" (addJSONObject ["password" .= defPassword] req)
+
 putConversationProtocol ::
   ( HasCallStack,
     MakesValue user,
diff --git a/integration/test/Notifications.hs b/integration/test/Notifications.hs
index 861191fce9..ec92dd390b 100644
--- a/integration/test/Notifications.hs
+++ b/integration/test/Notifications.hs
@@ -110,6 +110,9 @@ isConvCreateNotif n = fieldEquals n "payload.0.type" "conversation.create"
 isConvDeleteNotif :: MakesValue a => a -> App Bool
 isConvDeleteNotif n = fieldEquals n "payload.0.type" "conversation.delete"
 
+isTeamMemberLeaveNotif :: MakesValue a => a -> App Bool
+isTeamMemberLeaveNotif n = nPayload n %. "type" `isEqual` "team.member-leave"
+
 assertLeaveNotification ::
   ( HasCallStack,
     MakesValue fromUser,
diff --git a/integration/test/Test/Conversation.hs b/integration/test/Test/Conversation.hs
index 87b588614e..4b07747cd3 100644
--- a/integration/test/Test/Conversation.hs
+++ b/integration/test/Test/Conversation.hs
@@ -660,6 +660,33 @@ testDeleteTeamConversationWithUnreachableRemoteMembers = do
       notif <- awaitNotification bob bobClient noValue isConvDeleteNotif
       assertNotification notif
 
+testDeleteTeamMember :: HasCallStack => App ()
+testDeleteTeamMember = do
+  (alice, team, [alex]) <- createTeam OwnDomain 2
+  [amy, bob] <- for [OwnDomain, OtherDomain] $ flip randomUser def
+  forM_ [amy, bob] $ connectTwoUsers alice
+  [aliceId, alexId, amyId, bobId] <-
+    forM [alice, alex, amy, bob] (%. "qualified_id")
+  let nc = (defProteus {qualifiedUsers = [alexId, amyId, bobId], team = Just team})
+  conv <- postConversation alice nc >>= getJSON 201
+  withWebSockets [alice, amy, bob] $ \[wsAlice, wsAmy, wsBob] -> do
+    void $ deleteTeamMember team alice alex >>= getBody 202
+    do
+      n <- awaitMatch isTeamMemberLeaveNotif wsAlice
+      alexUId <- alex %. "id"
+      nPayload n %. "data.user" `shouldMatch` alexUId
+    do
+      n <- awaitMatch isConvLeaveNotif wsAmy
+      nPayload n %. "data.qualified_user_ids.0" `shouldMatch` alexId
+    do
+      bindResponse (getConversation bob conv) $ \resp -> do
+        resp.status `shouldMatchInt` 200
+        mems <- resp.json %. "members.others" & asList
+        memIds <- forM mems (%. "qualified_id")
+        memIds `shouldMatchSet` [aliceId, amyId]
+      n <- awaitMatch isConvLeaveNotif wsBob
+      nPayload n %. "data.qualified_user_ids.0" `shouldMatch` alexId
+
 testLeaveConversationSuccess :: HasCallStack => App ()
 testLeaveConversationSuccess = do
   [alice, bob, chad, dee] <- createUsers [OwnDomain, OwnDomain, OtherDomain, OtherDomain]
diff --git a/services/galley/src/Galley/API/Teams.hs b/services/galley/src/Galley/API/Teams.hs
index 98573b9ef8..55e048f8b9 100644
--- a/services/galley/src/Galley/API/Teams.hs
+++ b/services/galley/src/Galley/API/Teams.hs
@@ -81,7 +81,9 @@ import Data.Proxy
 import Data.Qualified
 import Data.Range as Range
 import Data.Set qualified as Set
+import Data.Singletons
 import Data.Time.Clock (UTCTime)
+import Galley.API.Action
 import Galley.API.Error as Galley
 import Galley.API.LegalHold.Team
 import Galley.API.Teams.Notifications qualified as APITeamQueue
@@ -120,7 +122,7 @@ import Polysemy.Output
 import Polysemy.TinyLog qualified as P
 import SAML2.WebSSO qualified as SAML
 import System.Logger (Msg)
-import System.Logger.Class qualified as Log
+import System.Logger qualified as Log
 import Wire.API.Conversation.Role (Action (DeleteConversation), wireConvRoles)
 import Wire.API.Conversation.Role qualified as Public
 import Wire.API.Error
@@ -866,7 +868,8 @@ updateTeamMember lzusr zcon tid newMember = do
         && permissionsRole targetPermissions /= Just RoleOwner
 
 deleteTeamMember ::
-  ( Member BrigAccess r,
+  ( Member BackendNotificationQueueAccess r,
+    Member BrigAccess r,
     Member ConversationStore r,
     Member (Error AuthenticationError) r,
     Member (Error InvalidInput) r,
@@ -891,7 +894,8 @@ deleteTeamMember ::
 deleteTeamMember lusr zcon tid remove body = deleteTeamMember' lusr zcon tid remove (Just body)
 
 deleteNonBindingTeamMember ::
-  ( Member BrigAccess r,
+  ( Member BackendNotificationQueueAccess r,
+    Member BrigAccess r,
     Member ConversationStore r,
     Member (Error AuthenticationError) r,
     Member (Error InvalidInput) r,
@@ -916,7 +920,8 @@ deleteNonBindingTeamMember lusr zcon tid remove = deleteTeamMember' lusr zcon ti
 
 -- | 'TeamMemberDeleteData' is only required for binding teams
 deleteTeamMember' ::
-  ( Member BrigAccess r,
+  ( Member BackendNotificationQueueAccess r,
+    Member BrigAccess r,
     Member ConversationStore r,
     Member (Error AuthenticationError) r,
     Member (Error InvalidInput) r,
@@ -974,10 +979,12 @@ deleteTeamMember' lusr zcon tid remove mBody = do
 -- This function is "unchecked" because it does not validate that the user has the `RemoveTeamMember` permission.
 uncheckedDeleteTeamMember ::
   forall r.
-  ( Member ConversationStore r,
+  ( Member BackendNotificationQueueAccess r,
+    Member ConversationStore r,
     Member GundeckAccess r,
     Member ExternalAccess r,
     Member (Input UTCTime) r,
+    Member (P.Logger (Log.Msg -> Log.Msg)) r,
     Member MemberStore r,
     Member TeamStore r
   ) =>
@@ -991,7 +998,8 @@ uncheckedDeleteTeamMember lusr zcon tid remove admins = do
   now <- input
   pushMemberLeaveEvent now
   E.deleteTeamMember tid remove
-  removeFromConvsAndPushConvLeaveEvent now
+  -- notify all conversation members not in this team.
+  removeFromConvsAndPushConvLeaveEvent lusr zcon tid remove admins
   where
     -- notify team admins
     pushMemberLeaveEvent :: UTCTime -> Sem r ()
@@ -1004,26 +1012,51 @@ uncheckedDeleteTeamMember lusr zcon tid remove admins = do
                 (filter (/= (tUnqualified lusr)) admins)
       E.push1 $
         newPushLocal1 ListComplete (tUnqualified lusr) (TeamEvent e) r & pushConn .~ zcon & pushTransient .~ True
-    -- notify all conversation members not in this team.
-    removeFromConvsAndPushConvLeaveEvent :: UTCTime -> Sem r ()
-    removeFromConvsAndPushConvLeaveEvent now = do
-      let tmids = Set.fromList admins
-      let edata = Conv.EdMembersLeave Conv.EdReasonDeleted (Conv.QualifiedUserIdList [tUntagged (qualifyAs lusr remove)])
-      cc <- E.getTeamConversations tid
-      for_ cc $ \c ->
-        E.getConversation (c ^. conversationId) >>= \conv ->
-          for_ conv $ \dc -> when (remove `isMember` Data.convLocalMembers dc) $ do
-            E.deleteMembers (c ^. conversationId) (UserList [remove] [])
-            pushEvent tmids edata now dc
-    pushEvent :: Set UserId -> Conv.EventData -> UTCTime -> Data.Conversation -> Sem r ()
-    pushEvent exceptTo edata now dc = do
-      let qconvId = tUntagged $ qualifyAs lusr (Data.convId dc)
-      let (bots, users) = localBotsAndUsers (Data.convLocalMembers dc)
-      let x = filter (\m -> not (Conv.lmId m `Set.member` exceptTo)) users
-      let y = Conv.Event qconvId Nothing (tUntagged lusr) now edata
-      for_ (newPushLocal ListComplete (tUnqualified lusr) (ConvEvent y) (recipient <$> x)) $ \p ->
-        E.push1 $ p & pushConn .~ zcon
-      E.deliverAsync (map (,y) bots)
+
+removeFromConvsAndPushConvLeaveEvent ::
+  forall r.
+  ( Member BackendNotificationQueueAccess r,
+    Member ConversationStore r,
+    Member ExternalAccess r,
+    Member GundeckAccess r,
+    Member (Input UTCTime) r,
+    Member (P.Logger (Log.Msg -> Log.Msg)) r,
+    Member MemberStore r,
+    Member TeamStore r
+  ) =>
+  Local UserId ->
+  Maybe ConnId ->
+  TeamId ->
+  UserId ->
+  [UserId] ->
+  Sem r ()
+removeFromConvsAndPushConvLeaveEvent lusr zcon tid remove admins = do
+  let teamAdmins = Set.fromList admins
+  cc <- E.getTeamConversations tid
+  for_ cc $ \c ->
+    E.getConversation (c ^. conversationId) >>= \conv ->
+      for_ conv $ \dc ->
+        when (remove `isMember` Data.convLocalMembers dc) $ do
+          E.deleteMembers (c ^. conversationId) (UserList [remove] [])
+          let (bots, allLocUsers) = localBotsAndUsers (Data.convLocalMembers dc)
+              notAdmins =
+                foldMap
+                  (\m -> guard (not (Conv.lmId m `Set.member` teamAdmins)) $> Conv.lmId m)
+                  allLocUsers
+              targets =
+                BotsAndMembers
+                  (Set.fromList notAdmins)
+                  (Set.fromList $ Conv.rmId <$> Data.convRemoteMembers dc)
+                  (Set.fromList bots)
+          void $
+            notifyConversationAction
+              (sing @'ConversationRemoveMembersTag)
+              (tUntagged lusr)
+              True
+              zcon
+              (qualifyAs lusr dc)
+              targets
+              (pure . tUntagged . qualifyAs lusr $ remove)
 
 getTeamConversations ::
   ( Member (ErrorS 'NotATeamMember) r,