diff --git a/packages/editor/src/components/post-author/combobox.js b/packages/editor/src/components/post-author/combobox.js
index 867eca7947976a..9cc6e01f5b82ce 100644
--- a/packages/editor/src/components/post-author/combobox.js
+++ b/packages/editor/src/components/post-author/combobox.js
@@ -17,7 +17,8 @@ export default function PostAuthorCombobox() {
 	const [ fieldValue, setFieldValue ] = useState();
 
 	const { editPost } = useDispatch( editorStore );
-	const { authorId, authorOptions } = useAuthorsQuery( fieldValue );
+	const { authorId, authorOptions, isLoading } =
+		useAuthorsQuery( fieldValue );
 
 	/**
 	 * Handle author selection.
@@ -51,6 +52,7 @@ export default function PostAuthorCombobox() {
 			onChange={ handleSelect }
 			allowReset={ false }
 			hideLabelFromVision
+			isLoading={ isLoading }
 		/>
 	);
 }
diff --git a/packages/editor/src/components/post-author/hook.js b/packages/editor/src/components/post-author/hook.js
index f251eba79e1806..28c4c126547b82 100644
--- a/packages/editor/src/components/post-author/hook.js
+++ b/packages/editor/src/components/post-author/hook.js
@@ -14,9 +14,9 @@ import { store as editorStore } from '../../store';
 import { AUTHORS_QUERY, BASE_QUERY } from './constants';
 
 export function useAuthorsQuery( search ) {
-	const { authorId, authors, postAuthor } = useSelect(
+	const { authorId, authors, postAuthor, isLoading } = useSelect(
 		( select ) => {
-			const { getUser, getUsers } = select( coreStore );
+			const { getUser, getUsers, isResolving } = select( coreStore );
 			const { getEditedPostAttribute } = select( editorStore );
 			const _authorId = getEditedPostAttribute( 'author' );
 			const query = { ...AUTHORS_QUERY };
@@ -30,6 +30,7 @@ export function useAuthorsQuery( search ) {
 				authorId: _authorId,
 				authors: getUsers( query ),
 				postAuthor: getUser( _authorId, BASE_QUERY ),
+				isLoading: isResolving( 'getUsers', [ query ] ),
 			};
 		},
 		[ search ]
@@ -68,5 +69,5 @@ export function useAuthorsQuery( search ) {
 		return [ ...currentAuthor, ...fetchedAuthors ];
 	}, [ authors, postAuthor ] );
 
-	return { authorId, authorOptions, postAuthor };
+	return { authorId, authorOptions, postAuthor, isLoading };
 }