diff --git a/com.twin.app.shoptime/src/actions/actionTypes.js b/com.twin.app.shoptime/src/actions/actionTypes.js
index 0507bedb..a62e7509 100644
--- a/com.twin.app.shoptime/src/actions/actionTypes.js
+++ b/com.twin.app.shoptime/src/actions/actionTypes.js
@@ -257,6 +257,7 @@ export const types = {
   GET_CHAT_LOG: 'GET_CHAT_LOG',
   GET_SUBTITLE: 'GET_SUBTITLE',
   CLEAR_PLAYER_INFO: 'CLEAR_PLAYER_INFO',
+  CLEAR_SUBTITLE_BLOB: 'CLEAR_SUBTITLE_BLOB',
   UPDATE_VIDEO_PLAY_STATE: 'UPDATE_VIDEO_PLAY_STATE',
 
   // 🔽 [251116] 새로운 비디오 상태 관리 시스템 - 재생 상태
diff --git a/com.twin.app.shoptime/src/actions/playActions.js b/com.twin.app.shoptime/src/actions/playActions.js
index 594bf9fc..2db5ac53 100644
--- a/com.twin.app.shoptime/src/actions/playActions.js
+++ b/com.twin.app.shoptime/src/actions/playActions.js
@@ -786,6 +786,28 @@ export const CLEAR_PLAYER_INFO = () => ({
   type: types.CLEAR_PLAYER_INFO,
 });
 
+// 특정 자막 Blob URL을 해제하는 액션 생성자
+export const clearSubtitleBlob = (subtitleUrl) => (dispatch, getState) => {
+  const currentBlobs = getState().play.subTitleBlobs;
+  const blobUrl = currentBlobs[subtitleUrl];
+
+  // Blob URL 해제
+  if (blobUrl && blobUrl.startsWith('blob:')) {
+    try {
+      URL.revokeObjectURL(blobUrl);
+      dlog('[clearSubtitleBlob] Revoked Blob URL:', subtitleUrl);
+    } catch (error) {
+      derror('[clearSubtitleBlob] Failed to revoke Blob URL:', error);
+    }
+  }
+
+  // Redux 상태에서 제거
+  dispatch({
+    type: types.CLEAR_SUBTITLE_BLOB,
+    payload: { subtitleUrl }
+  });
+};
+
 /**
  * 비디오 재생 상태를 Redux에 업데이트합니다.
  * @param {Object} playState - 업데이트할 재생 상태
diff --git a/com.twin.app.shoptime/src/components/VideoPlayer/TReactPlayer.jsx b/com.twin.app.shoptime/src/components/VideoPlayer/TReactPlayer.jsx
index 314ff62b..eac230ac 100644
--- a/com.twin.app.shoptime/src/components/VideoPlayer/TReactPlayer.jsx
+++ b/com.twin.app.shoptime/src/components/VideoPlayer/TReactPlayer.jsx
@@ -169,6 +169,11 @@ export default function TReactPlayer({
           if (typeof videoNode.stopVideo === 'function' && videoNode.stopVideo !== videoNode.pause) {
             videoNode.stopVideo();
           }
+          // HLS 인스턴스가 존재하면 명시적으로 파괴
+          const hls = playerRef.current?.getInternalPlayer?.('hls');
+          if (hls && typeof hls.destroy === 'function') {
+            hls.destroy();
+          }
         } catch (err) {
           console.warn('[TReactPlayer] cleanup warning:', err);
         }
diff --git a/com.twin.app.shoptime/src/reducers/playReducer.js b/com.twin.app.shoptime/src/reducers/playReducer.js
index 78389d86..8827d3d1 100644
--- a/com.twin.app.shoptime/src/reducers/playReducer.js
+++ b/com.twin.app.shoptime/src/reducers/playReducer.js
@@ -103,6 +103,18 @@ export const playReducer = (state = initialState, action) => {
         subTitleBlobs: {},
       };
     }
+    case types.CLEAR_SUBTITLE_BLOB: {
+      const { subtitleUrl } = action.payload;
+      const newSubTitleBlobs = { ...state.subTitleBlobs };
+
+      // 특정 URL만 제거
+      delete newSubTitleBlobs[subtitleUrl];
+
+      return {
+        ...state,
+        subTitleBlobs: newSubTitleBlobs,
+      };
+    }
     case types.UPDATE_VIDEO_PLAY_STATE: {
       const newState = {
         ...state.videoPlayState,
diff --git a/com.twin.app.shoptime/src/views/PlayerPanel/PlayerPanel.jsx b/com.twin.app.shoptime/src/views/PlayerPanel/PlayerPanel.jsx
index 2676751f..4e179bab 100644
--- a/com.twin.app.shoptime/src/views/PlayerPanel/PlayerPanel.jsx
+++ b/com.twin.app.shoptime/src/views/PlayerPanel/PlayerPanel.jsx
@@ -34,6 +34,7 @@ import * as PanelActions from '../../actions/panelActions';
 import { updatePanel } from '../../actions/panelActions';
 import {
   CLEAR_PLAYER_INFO,
+  clearSubtitleBlob,
   getChatLog,
   getSubTitle,
   startVideoPlayer,
@@ -261,6 +262,7 @@ const PlayerPanel = ({ isTabActivated, panelInfo, isOnTop, spotlightId, ...props
   const liveShowInfos = USE_SELECTOR('liveShowInfos', (state) => state.main.liveShowInfos);
   const vodSubtitleData = USE_SELECTOR('vodSubtitleData', (state) => state.play.subTitleBlobs);
   const previousSubtitleBlobRef = useRef(null);
+  const previousSubtitleUrlRef = useRef(null);
   const broadcast = USE_SELECTOR('broadcast', (state) => state.common.broadcast);
   const videoPlayState = USE_SELECTOR('videoPlayState', (state) => state.play.videoPlayState);
 
@@ -1493,6 +1495,13 @@ const PlayerPanel = ({ isTabActivated, panelInfo, isOnTop, spotlightId, ...props
     }
   }, [panelInfo?.shptmBanrTpNm, playListInfo]);
 
+  // 컴포넌트 언마운트 시 Job 정리
+  useEffect(() => {
+    return () => {
+      initialFocusTimeoutJob.current?.stop?.();
+    };
+  }, []);
+
   // live subtitle Luna API
   useEffect(() => {
     if (currentSubtitleBlob) {
@@ -1953,7 +1962,23 @@ const PlayerPanel = ({ isTabActivated, panelInfo, isOnTop, spotlightId, ...props
     if (currentSubtitleUrl) {
       dispatch(getSubTitle({ showSubtitleUrl: currentSubtitleUrl }));
     }
-  }, [currentSubtitleUrl]);
+
+    // 이전 자막 URL 정리 (Redux 메모리 누수 방지)
+    const prevSubtitleUrl = previousSubtitleUrlRef.current;
+    if (prevSubtitleUrl && prevSubtitleUrl !== currentSubtitleUrl) {
+      dispatch(clearSubtitleBlob(prevSubtitleUrl));
+      dlog('[PlayerPanel] Clearing previous subtitle URL:', prevSubtitleUrl);
+    }
+
+    previousSubtitleUrlRef.current = currentSubtitleUrl;
+
+    // 컴포넌트 언마운트 시 마지막 자막 URL 정리
+    return () => {
+      if (previousSubtitleUrlRef.current) {
+        dispatch(clearSubtitleBlob(previousSubtitleUrlRef.current));
+      }
+    };
+  }, [currentSubtitleUrl, dispatch]);
 
   useEffect(() => {
     setVideoLoaded(false);