diff --git a/src/app/(main)/m/admin/orders/page.tsx b/src/app/(main)/m/admin/orders/page.tsx
index 1bdb68a..69f9a88 100644
--- a/src/app/(main)/m/admin/orders/page.tsx
+++ b/src/app/(main)/m/admin/orders/page.tsx
@@ -173,6 +173,10 @@ export default function AdminOrdersPage() {
     const previousLocked = lockedOrderRef.current;
     if (previousLocked && previousLocked !== activeId) {
       releaseLock(previousLocked);
+      // 옵티미스틱: 리스트에서 이전 락 즉시 제거
+      setOrders((prev) => prev.map((o) =>
+        o.OBJID === previousLocked ? { ...o, EDITING_BY: null, EDITING_BY_NAME: null } : o
+      ));
       lockedOrderRef.current = "";
     }
     // 이전 heartbeat 정지
@@ -205,6 +209,10 @@ export default function AdminOrdersPage() {
           setLockedByMe(true);
           setLockedByOther(null);
           lockedOrderRef.current = activeId;
+          // 옵티미스틱: 리스트에 내 락 즉시 반영
+          setOrders((prev) => prev.map((o) =>
+            o.OBJID === activeId ? { ...o, EDITING_BY: lj.lockedBy || myUserId, EDITING_BY_NAME: lj.lockedByName || "(나)" } : o
+          ));
           // 30초마다 heartbeat
           heartbeatRef.current = setInterval(async () => {
             try {
@@ -224,6 +232,10 @@ export default function AdminOrdersPage() {
         } else if (lj.locked) {
           setLockedByMe(false);
           setLockedByOther({ name: lj.lockedByName || lj.lockedBy || "다른 담당자" });
+          // 옵티미스틱: 리스트에 락 정보 반영
+          setOrders((prev) => prev.map((o) =>
+            o.OBJID === activeId ? { ...o, EDITING_BY: lj.lockedBy || "other", EDITING_BY_NAME: lj.lockedByName || "다른 담당자" } : o
+          ));
           Swal.fire({
             icon: "warning",
             title: "수정 중인 발주",
@@ -236,7 +248,7 @@ export default function AdminOrdersPage() {
     })();
 
     return () => { cancelled = true; };
-  }, [activeId, releaseLock]);
+  }, [activeId, releaseLock, myUserId]);
 
   // 페이지 떠날 때 락 해제 (best-effort) — sendBeacon 으로 keepalive
   useEffect(() => {