diff --git a/src/wp-admin/includes/class-wp-ms-users-list-table.php b/src/wp-admin/includes/class-wp-ms-users-list-table.php
index d50038a898..d44bd1ed76 100644
--- a/src/wp-admin/includes/class-wp-ms-users-list-table.php
+++ b/src/wp-admin/includes/class-wp-ms-users-list-table.php
@@ -258,7 +258,11 @@ class WP_MS_Users_List_Table extends WP_List_Table {
 	 * @param WP_User $user The current WP_User object.
 	 */
 	public function column_name( $user ) {
-		echo "$user->first_name $user->last_name";
+		if ( $user->first_name && $user->last_name ) {
+			echo "$user->first_name $user->last_name";
+		} else {
+			echo '<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">' . _x( 'Unknown', 'name' ) . '</span>';
+		}
 	}
 
 	/**
diff --git a/src/wp-admin/includes/class-wp-users-list-table.php b/src/wp-admin/includes/class-wp-users-list-table.php
index 4ba5eef8be..435a5b28ae 100644
--- a/src/wp-admin/includes/class-wp-users-list-table.php
+++ b/src/wp-admin/includes/class-wp-users-list-table.php
@@ -471,7 +471,11 @@ class WP_Users_List_Table extends WP_List_Table {
 						$r .= "$avatar $edit";
 						break;
 					case 'name':
-						$r .= "$user_object->first_name $user_object->last_name";
+						if ( $user_object->first_name && $user_object->last_name ) {
+							$r .= "$user_object->first_name $user_object->last_name";
+						} else {
+							$r .= '<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">' . _x( 'Unknown', 'name' ) . '</span>';
+						}
 						break;
 					case 'email':
 						$r .= "<a href='" . esc_url( "mailto:$email" ) . "'>$email</a>";