diff --git a/src/main/java/com/back/domain/post/post/controller/PostController.java b/src/main/java/com/back/domain/post/post/controller/PostController.java
index f601a72d..160b871d 100644
--- a/src/main/java/com/back/domain/post/post/controller/PostController.java
+++ b/src/main/java/com/back/domain/post/post/controller/PostController.java
@@ -41,4 +41,16 @@ public RsData<PostResponseDto> createPost(
   public RsData<List<PostResponseDto>> getAllPosts() {
     return RsData.successOf(postService.getAllPosts()); // code=200, message="success"
   }
+
+  /**
+   * 게시글 단건 조회 API
+   * @param postId 조회할 게시글 ID
+   * @return 해당 ID의 게시글 정보
+   */
+  @GetMapping("/{postId}")
+  public RsData<PostResponseDto> getPost(
+      @PathVariable Long postId
+  ) {
+    return RsData.successOf(postService.getPost(postId)); // code=200, message="success"
+  }
 }
diff --git a/src/main/java/com/back/domain/post/post/service/PostService.java b/src/main/java/com/back/domain/post/post/service/PostService.java
index d3817088..4261e00f 100644
--- a/src/main/java/com/back/domain/post/post/service/PostService.java
+++ b/src/main/java/com/back/domain/post/post/service/PostService.java
@@ -11,6 +11,7 @@
 import com.back.domain.user.entity.User;
 import com.back.global.rq.Rq;
 import java.util.List;
+import java.util.NoSuchElementException;
 import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -69,4 +70,13 @@ public List<PostResponseDto> getAllPosts() {
         .map(PostResponseDto::new)
         .collect(Collectors.toList());
   }
+
+  // 게시글 단건 조회 로직
+  @Transactional(readOnly = true)
+  public PostResponseDto getPost(Long postId) {
+    return new PostResponseDto(
+        postRepository.findById(postId)
+            .orElseThrow(() -> new NoSuchElementException("해당 게시글을 찾을 수 없습니다. ID: " + postId))
+    );
+  }
 }