diff --git a/frontend/src/pages/mobile/public/AlbumGallery.jsx b/frontend/src/pages/mobile/public/AlbumGallery.jsx
index 8619075..3b5c184 100644
--- a/frontend/src/pages/mobile/public/AlbumGallery.jsx
+++ b/frontend/src/pages/mobile/public/AlbumGallery.jsx
@@ -208,6 +208,10 @@ function MobileAlbumGallery() {
                                 />
                             </motion.div>
                         ))}
+                        {/* 홀수개일 때 오른쪽 열 하단에 빈 공간 방지용 플레이스홀더 */}
+                        {photos.length % 2 === 1 && (
+                            <div className="flex-1" />
+                        )}
                     </div>
                 </div>
             </div>