diff --git a/src/main/java/com/swyp8team2/comment/presentation/dto/CommentResponse.java b/src/main/java/com/swyp8team2/comment/presentation/dto/CommentResponse.java
index 30af16ab..ea3c6f67 100644
--- a/src/main/java/com/swyp8team2/comment/presentation/dto/CommentResponse.java
+++ b/src/main/java/com/swyp8team2/comment/presentation/dto/CommentResponse.java
@@ -11,7 +11,7 @@ public record CommentResponse(
         Long commentId,
         String content,
         AuthorDto author,
-        Long imageId,
+        Long voteImageId,
         LocalDateTime createdAt
 ) implements CursorDto {
 
diff --git a/src/main/java/com/swyp8team2/post/application/PostService.java b/src/main/java/com/swyp8team2/post/application/PostService.java
index f39e5c1e..b9279815 100644
--- a/src/main/java/com/swyp8team2/post/application/PostService.java
+++ b/src/main/java/com/swyp8team2/post/application/PostService.java
@@ -61,7 +61,8 @@ public PostResponse findById(Long userId, Long postId) {
         User author = userRepository.findById(post.getUserId())
                 .orElseThrow(() -> new BadRequestException(ErrorCode.USER_NOT_FOUND));
         List<PostImageResponse> votes = createPostImageResponse(userId, postId, post);
-        return PostResponse.of(post, author, votes);
+        boolean isAuthor = post.getUserId().equals(userId);
+        return PostResponse.of(post, author, votes, isAuthor);
     }
 
     private List<PostImageResponse> createPostImageResponse(Long userId, Long postId, Post post) {
diff --git a/src/main/java/com/swyp8team2/post/presentation/PostController.java b/src/main/java/com/swyp8team2/post/presentation/PostController.java
index ca181605..ac5e33d9 100644
--- a/src/main/java/com/swyp8team2/post/presentation/PostController.java
+++ b/src/main/java/com/swyp8team2/post/presentation/PostController.java
@@ -77,6 +77,7 @@ public ResponseEntity<PostResponse> findPost(@PathVariable("shareUrl") String sh
                         new PostImageResponse(2L, "뽀또B", "https://image.photopic.site/image/2", "https://image.photopic.site/image/resize/1", false)
                 ),
                 "https://photopic.site/shareurl",
+                true,
                 LocalDateTime.of(2025, 2, 13, 12, 0)
         ));
     }
diff --git a/src/main/java/com/swyp8team2/post/presentation/dto/PostResponse.java b/src/main/java/com/swyp8team2/post/presentation/dto/PostResponse.java
index cb32afc3..6f082117 100644
--- a/src/main/java/com/swyp8team2/post/presentation/dto/PostResponse.java
+++ b/src/main/java/com/swyp8team2/post/presentation/dto/PostResponse.java
@@ -12,15 +12,17 @@ public record PostResponse(
         String description,
         List<PostImageResponse> images,
         String shareUrl,
+        boolean isAuthor,
         LocalDateTime createdAt
 ) {
-    public static PostResponse of(Post post, User user, List<PostImageResponse> images) {
+    public static PostResponse of(Post post, User user, List<PostImageResponse> images, boolean isAuthor) {
         return new PostResponse(
                 post.getId(),
                 AuthorDto.of(user),
                 post.getDescription(),
                 images,
                 post.getShareUrl(),
+                isAuthor,
                 post.getCreatedAt()
         );
     }
diff --git a/src/test/java/com/swyp8team2/comment/presentation/CommentControllerTest.java b/src/test/java/com/swyp8team2/comment/presentation/CommentControllerTest.java
index 46dfbf8b..ab316900 100644
--- a/src/test/java/com/swyp8team2/comment/presentation/CommentControllerTest.java
+++ b/src/test/java/com/swyp8team2/comment/presentation/CommentControllerTest.java
@@ -119,7 +119,7 @@ void findComments() throws Exception {
                                 fieldWithPath("data[].author.profileUrl")
                                         .type(JsonFieldType.STRING)
                                         .description("작성자 프로필 이미지 url"),
-                                fieldWithPath("data[].imageId")
+                                fieldWithPath("data[].voteImageId")
                                         .type(JsonFieldType.NUMBER)
                                         .optional()
                                         .description("작성자가 투표한 이미지 Id (투표 없을 시 null)"),
diff --git a/src/test/java/com/swyp8team2/post/presentation/PostControllerTest.java b/src/test/java/com/swyp8team2/post/presentation/PostControllerTest.java
index 6af99fb9..1ca9d1cc 100644
--- a/src/test/java/com/swyp8team2/post/presentation/PostControllerTest.java
+++ b/src/test/java/com/swyp8team2/post/presentation/PostControllerTest.java
@@ -90,6 +90,7 @@ void findPost() throws Exception {
                         new PostImageResponse(2L, "뽀또B", "https://image.photopic.site/image/2", "https://image.photopic.site/image/resize/2", false)
                 ),
                 "https://photopic.site/shareurl",
+                 true,
                 LocalDateTime.of(2025, 2, 13, 12, 0)
         );
         given(postService.findById(any(), any()))
@@ -117,7 +118,8 @@ void findPost() throws Exception {
                                 fieldWithPath("images[].thumbnailUrl").type(JsonFieldType.STRING).description("확대 사진 이미지"),
                                 fieldWithPath("images[].voted").type(JsonFieldType.BOOLEAN).description("투표 여부"),
                                 fieldWithPath("shareUrl").type(JsonFieldType.STRING).description("게시글 공유 URL"),
-                                fieldWithPath("createdAt").type(JsonFieldType.STRING).description("게시글 생성 시간")
+                                fieldWithPath("createdAt").type(JsonFieldType.STRING).description("게시글 생성 시간"),
+                                fieldWithPath("isAuthor").type(JsonFieldType.BOOLEAN).description("게시글 작성자 여부")
                         )
                 ));
     }