diff --git a/lib/selectors/user-selectors.js b/lib/selectors/user-selectors.js
--- a/lib/selectors/user-selectors.js
+++ b/lib/selectors/user-selectors.js
@@ -130,16 +130,12 @@
   [id: string]: AccountUserInfo,
 } = createSelector(
   (state: BaseAppState<>) => state.userStore.userInfos,
-  (state: BaseAppState<>) => state.currentUserInfo && state.currentUserInfo.id,
-  (
-    userInfos: UserInfos,
-    currentUserID: ?string,
-  ): { [id: string]: AccountUserInfo } => {
+  (userInfos: UserInfos): { [id: string]: AccountUserInfo } => {
     const availableUsers: { [id: string]: AccountUserInfo } = {};
 
     for (const id in userInfos) {
       const { username, relationshipStatus } = userInfos[id];
-      if (id === currentUserID || !username) {
+      if (!username) {
         continue;
       }
       if (
diff --git a/native/chat/compose-subchannel.react.js b/native/chat/compose-subchannel.react.js
--- a/native/chat/compose-subchannel.react.js
+++ b/native/chat/compose-subchannel.react.js
@@ -197,11 +197,16 @@
     community ? threadInfoSelector(state)[community] : null,
   );
   const auxUserInfos = useSelector(state => state.auxUserStore.auxUserInfos);
+  const viewerID = useSelector(state => state.currentUserInfo?.id);
+  const excludeUserIDs = React.useMemo(
+    () => [...userInfoInputIDs, ...(viewerID ? [viewerID] : [])],
+    [userInfoInputIDs, viewerID],
+  );
   const userSearchResults = usePotentialMemberItems({
     text: usernameInputText,
     userInfos: otherUserInfos,
     auxUserInfos,
-    excludeUserIDs: userInfoInputIDs,
+    excludeUserIDs,
     inputParentThreadInfo: parentThreadInfo,
     inputCommunityThreadInfo: communityThreadInfo,
     threadType,
diff --git a/native/chat/settings/add-users-modal.react.js b/native/chat/settings/add-users-modal.react.js
--- a/native/chat/settings/add-users-modal.react.js
+++ b/native/chat/settings/add-users-modal.react.js
@@ -174,9 +174,14 @@
     () => threadActualMembers(threadInfo.members),
     [threadInfo.members],
   );
+  const viewerID = useSelector(state => state.currentUserInfo?.id);
   const excludeUserIDs = React.useMemo(
-    () => userInfoInputIDs.concat(threadMemberIDs),
-    [userInfoInputIDs, threadMemberIDs],
+    () => [
+      ...userInfoInputIDs,
+      ...threadMemberIDs,
+      ...(viewerID ? [viewerID] : []),
+    ],
+    [userInfoInputIDs, threadMemberIDs, viewerID],
   );
 
   const otherUserInfos = useSelector(userInfoSelectorForPotentialMembers);
diff --git a/web/settings/relationship/add-users-utils.js b/web/settings/relationship/add-users-utils.js
--- a/web/settings/relationship/add-users-utils.js
+++ b/web/settings/relationship/add-users-utils.js
@@ -139,12 +139,14 @@
     community ? threadInfoSelector(state)[community] : null,
   );
   const otherUserInfos = useSelector(userInfoSelectorForPotentialMembers);
+  const viewerID = useSelector(state => state.currentUserInfo?.id);
   const excludeUserIDs = React.useMemo(
-    () =>
-      threadActualMembers(threadInfo.members).concat(
-        Array.from(previouslySelectedUsers.keys()),
-      ),
-    [previouslySelectedUsers, threadInfo.members],
+    () => [
+      ...threadActualMembers(threadInfo.members),
+      ...previouslySelectedUsers.keys(),
+      ...(viewerID ? [viewerID] : []),
+    ],
+    [previouslySelectedUsers, threadInfo.members, viewerID],
   );
 
   const auxUserInfos = useSelector(state => state.auxUserStore.auxUserInfos);
@@ -215,12 +217,18 @@
     [previouslySelectedUsers],
   );
 
+  const viewerID = useSelector(state => state.currentUserInfo?.id);
+  const excludeUserIDs = React.useMemo(
+    () => [...previouslySelectedUserIDs, ...(viewerID ? [viewerID] : [])],
+    [previouslySelectedUserIDs, viewerID],
+  );
+
   const auxUserInfos = useSelector(state => state.auxUserStore.auxUserInfos);
   const userSearchResults = usePotentialMemberItems({
     text: searchText,
     userInfos: otherUserInfos,
     auxUserInfos,
-    excludeUserIDs: previouslySelectedUserIDs,
+    excludeUserIDs,
     inputParentThreadInfo: parentThreadInfo,
     inputCommunityThreadInfo: communityThreadInfo,
     threadType,