diff --git a/src/features/Friends/SharedScheduleItem.tsx b/src/features/Friends/SharedScheduleItem.tsx
index 53cad40..7e111d6 100644
--- a/src/features/Friends/SharedScheduleItem.tsx
+++ b/src/features/Friends/SharedScheduleItem.tsx
@@ -13,6 +13,7 @@ interface SharedScheduleItemProps {
   endDate?: string
   sharerName: string
   accentColor: string
+  isOwner?: boolean
   onCancelSuccess?: () => void
 }
 
@@ -23,6 +24,7 @@ export default function SharedScheduleItem({
   endDate,
   sharerName = '이름없음',
   accentColor = '#5c6ac4',
+  isOwner = false,
   onCancelSuccess,
 }: SharedScheduleItemProps) {
   const queryClient = useQueryClient()
@@ -44,25 +46,27 @@ export default function SharedScheduleItem({
       ? formatDate(startDate)
       : `${formatDate(startDate)} - ${formatDate(endDate)}`
 
-  const leaveEventMutation = useMutation({
-    mutationFn: () => eventShareApi.leaveEvent(eventId),
+  const cancelShareMutation = useMutation({
+    mutationFn: () =>
+      isOwner ? eventShareApi.deleteEventParticipants(eventId) : eventShareApi.leaveEvent(eventId),
     onSuccess: (response) => {
       if (response.isSuccess) {
         queryClient.invalidateQueries({ queryKey: ['calendar'] })
         queryClient.invalidateQueries({ queryKey: ['events'] })
         queryClient.invalidateQueries({ queryKey: ['todos'] })
+        queryClient.invalidateQueries({ queryKey: ['sharedEvents'] })
 
         showToast({
-          title: '그룹 탈퇴 완료',
-          message: '성공적으로 탈퇴되었습니다.',
+          title: isOwner ? '공유 해제 완료' : '그룹 탈퇴 완료',
+          message: isOwner ? '성공적으로 공유가 해제되었습니다.' : '성공적으로 탈퇴되었습니다.',
           toastType: 'success',
         })
 
         onCancelSuccess?.()
       } else {
         showToast({
-          title: '탈퇴 처리 실패',
-          message: response.message || '탈퇴 처리에 실패했습니다.',
+          title: isOwner ? '공유 해제 실패' : '탈퇴 처리 실패',
+          message: response.message || '처리에 실패했습니다.',
           toastType: 'error',
         })
       }
@@ -80,8 +84,12 @@ export default function SharedScheduleItem({
   })
 
   const handleCancelShare = () => {
-    if (window.confirm('정말 이 공유 이벤트에서 탈퇴하시겠습니까?')) {
-      leaveEventMutation.mutate()
+    const confirmMessage = isOwner
+      ? '소유자가 공유를 해제하면 다른 참가자들의 공유 일정도 함께 삭제됩니다. 정말 공유를 해제하시겠습니까?'
+      : '정말 이 공유 이벤트에서 탈퇴하시겠습니까?'
+
+    if (window.confirm(confirmMessage)) {
+      cancelShareMutation.mutate()
     }
   }
 
@@ -94,14 +102,14 @@ export default function SharedScheduleItem({
       </S.TitleArea>
 
       <S.MetaArea>
-        <S.SharerBadge>공유자: {sharerName}</S.SharerBadge>
+        <S.SharerBadge>{isOwner ? '내 이벤트(Owner)' : `공유자: ${sharerName}`}</S.SharerBadge>
         <S.CancelButton
           bgColor="#fff1f0"
           textColor="#ff4d4f"
           onClick={handleCancelShare}
-          disabled={leaveEventMutation.isPending}
+          disabled={cancelShareMutation.isPending}
         >
-          {leaveEventMutation.isPending ? '취소 중...' : '공유 취소'}
+          {cancelShareMutation.isPending ? '처리 중...' : isOwner ? '공유 해제' : '공유 취소'}
         </S.CancelButton>
       </S.MetaArea>
     </S.Container>
diff --git a/src/pages/main/FriendsPage/FriendsPage.tsx b/src/pages/main/FriendsPage/FriendsPage.tsx
index f01c9e0..0073312 100644
--- a/src/pages/main/FriendsPage/FriendsPage.tsx
+++ b/src/pages/main/FriendsPage/FriendsPage.tsx
@@ -219,6 +219,7 @@ export default function FriendsPage() {
                 endDate={item.endDate}
                 sharerName={item.ownerName}
                 accentColor={getAccentColor(index + 3)}
+                isOwner={item.isOwner}
                 onCancelSuccess={handleActionSuccess}
               />
             ))
diff --git a/src/shared/api/friends/eventShare.ts b/src/shared/api/friends/eventShare.ts
index d234902..23a077c 100644
--- a/src/shared/api/friends/eventShare.ts
+++ b/src/shared/api/friends/eventShare.ts
@@ -33,6 +33,12 @@ export const eventShareApi = {
     const { data } = await axiosInstance.get<InvitationsApiResponse>(`${BASE_URL}/invitations`)
     return data
   },
+  deleteEventParticipants: async (eventId: number): Promise<LeaveEventResponse> => {
+    const { data } = await axiosInstance.delete<LeaveEventResponse>(
+      `/events/${eventId}/participants`,
+    )
+    return data
+  },
   leaveEvent: async (eventId: number): Promise<LeaveEventResponse> => {
     const { data } = await axiosInstance.delete<LeaveEventResponse>(
       `/events/${eventId}/participants/leave`,
diff --git a/src/shared/types/eventShare/eventShare.ts b/src/shared/types/eventShare/eventShare.ts
index 43ffe2e..3edfeea 100644
--- a/src/shared/types/eventShare/eventShare.ts
+++ b/src/shared/types/eventShare/eventShare.ts
@@ -3,6 +3,7 @@ import type { TCommonResponse } from '../common/common'
 export interface SharedEvent {
   eventId: number
   ownerName: string
+  isOwner: boolean
   title: string
   startDate: string
   endDate: string