diff --git a/src/main/java/com/haedal/haedalweb/config/SecurityConfig.java b/src/main/java/com/haedal/haedalweb/config/SecurityConfig.java
index 0add183..08dc075 100644
--- a/src/main/java/com/haedal/haedalweb/config/SecurityConfig.java
+++ b/src/main/java/com/haedal/haedalweb/config/SecurityConfig.java
@@ -77,7 +77,7 @@ public CorsConfiguration getCorsConfiguration(HttpServletRequest request) {
                         .requestMatchers("/admin/**").hasAnyRole("WEB_MASTER", "ADMIN")
                         .requestMatchers("/boards/generate-presigned-url").hasAnyRole("WEB_MASTER", "ADMIN", "TEAM_LEADER")
                         .requestMatchers(HttpMethod.POST, "/activities/{activityId}/boards").hasAnyRole("WEB_MASTER", "ADMIN", "TEAM_LEADER")
-                        .requestMatchers("/activities/{activityId}/boards", "/login", "/", "/join/**", "/reissue", "/swagger-ui/**", "/v3/api-docs/**", "/users/**","/semesters/**").permitAll()
+                        .requestMatchers("/activities/{activityId}/boards","/activities/{activityId}/boards/{boardId}","/login", "/", "/join/**", "/reissue", "/swagger-ui/**", "/v3/api-docs/**", "/users/**","/semesters/**").permitAll()
                         .anyRequest().authenticated());
 
         //JWTFilter 등록
diff --git a/src/main/java/com/haedal/haedalweb/constants/ErrorCode.java b/src/main/java/com/haedal/haedalweb/constants/ErrorCode.java
index b7e9b26..9ad4002 100644
--- a/src/main/java/com/haedal/haedalweb/constants/ErrorCode.java
+++ b/src/main/java/com/haedal/haedalweb/constants/ErrorCode.java
@@ -23,7 +23,8 @@ public enum ErrorCode implements ResponseCode{
     NOT_FOUND_SEMESTER_ID(HttpStatus.NOT_FOUND, "014", "해당 학기를 찾을 수 없습니다."),
     NOT_FOUND_ACTIVITY_ID(HttpStatus.NOT_FOUND, "015", "해당 활동을 찾을 수 없습니다."),
     EXIST_ACTIVITY(HttpStatus.CONFLICT, "016", "해당 학기에 활동이 존재하는 경우 삭제할 수 없습니다."),
-    EXIST_BOARD(HttpStatus.CONFLICT, "017", "해당 활동에 게시판이 존재하는 경우 삭제할 수 없습니다.");
+    EXIST_BOARD(HttpStatus.CONFLICT, "017", "해당 활동에 게시판이 존재하는 경우 삭제할 수 없습니다."),
+    NOT_FOUND_BOARD_ID(HttpStatus.NOT_FOUND, "018", "해당 게시판을 찾을 수 없습니다.");
 
     private final HttpStatus httpStatus;
     private final String code;
diff --git a/src/main/java/com/haedal/haedalweb/controller/BoardController.java b/src/main/java/com/haedal/haedalweb/controller/BoardController.java
index d472e14..069805c 100644
--- a/src/main/java/com/haedal/haedalweb/controller/BoardController.java
+++ b/src/main/java/com/haedal/haedalweb/controller/BoardController.java
@@ -70,4 +70,16 @@ public ResponseEntity<Page<BoardDTO>> getBoards(@PathVariable Long activityId,
 
         return ResponseEntity.ok(boardDTOs);
     }
+
+    @Operation(summary = "게시판 단일 조회")
+    @Parameters({
+            @Parameter(name = "activityId", description = "게시판 조회할 활동 ID"),
+            @Parameter(name = "boardId", description = "해당 게시판 ID")
+    })
+    @GetMapping("/activities/{activityId}/boards/{boardId}")
+    public ResponseEntity<BoardDTO> getBoard(@PathVariable Long activityId, @PathVariable Long boardId) {
+        BoardDTO boardDTO = boardService.getBoardDTO(activityId, boardId);
+
+        return ResponseEntity.ok(boardDTO);
+    }
 }
diff --git a/src/main/java/com/haedal/haedalweb/dto/response/BoardDTO.java b/src/main/java/com/haedal/haedalweb/dto/response/BoardDTO.java
index ca3894d..b377c00 100644
--- a/src/main/java/com/haedal/haedalweb/dto/response/BoardDTO.java
+++ b/src/main/java/com/haedal/haedalweb/dto/response/BoardDTO.java
@@ -13,6 +13,8 @@
 @Builder
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class BoardDTO {
+    private Long activityId;
+
     private Long boardId;
 
     private String boardName;
diff --git a/src/main/java/com/haedal/haedalweb/repository/BoardRepository.java b/src/main/java/com/haedal/haedalweb/repository/BoardRepository.java
index b4e0b44..3196ac6 100644
--- a/src/main/java/com/haedal/haedalweb/repository/BoardRepository.java
+++ b/src/main/java/com/haedal/haedalweb/repository/BoardRepository.java
@@ -6,10 +6,14 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.Optional;
+
 @Repository
 public interface BoardRepository extends JpaRepository<Board, Long> {
     boolean existsByActivityId(Long activityId);
 
     //@Query("select distinct b from Board b join fetch b.participants p join fetch p.user where b.activity.id = :activityId")
     Page<Board> findBoardsByActivityId(Long activityId, Pageable pageable);
+
+    Optional<Board> findByActivityIdAndId(Long activityId, Long boardId);
 }
diff --git a/src/main/java/com/haedal/haedalweb/service/BoardService.java b/src/main/java/com/haedal/haedalweb/service/BoardService.java
index d4162d6..3949c16 100644
--- a/src/main/java/com/haedal/haedalweb/service/BoardService.java
+++ b/src/main/java/com/haedal/haedalweb/service/BoardService.java
@@ -58,7 +58,15 @@ public void createBoard(Long activityId, CreateBoardDTO createBoardDTO) {
     public Page<BoardDTO> getBoardDTOs(Long activityId, Pageable pageable) {
         Page<Board> boardPage = boardRepository.findBoardsByActivityId(activityId, pageable);
 
-        return boardPage.map(this::convertToBoardDTO);
+        return boardPage.map(board -> convertToBoardDTO(board, activityId));
+    }
+
+    @Transactional(readOnly = true)
+    public BoardDTO getBoardDTO(Long activityId, Long boardId) {
+        Board board = boardRepository.findByActivityIdAndId(activityId, boardId)
+                .orElseThrow(() -> new BusinessException(ErrorCode.NOT_FOUND_BOARD_ID));
+
+        return convertToBoardDTO(board, activityId);
     }
 
     private void addParticipantsToBoard(Board board, List<User> participants) {
@@ -84,8 +92,9 @@ private void validateParticipants(List<User> users, List<String> userIds) {
         });
     }
 
-    private BoardDTO convertToBoardDTO(Board board) {
+    private BoardDTO convertToBoardDTO(Board board, Long activityId) {
         return BoardDTO.builder()
+                .activityId(activityId)
                 .boardId(board.getId())
                 .boardName(board.getName())
                 .boardIntro(board.getIntro())