diff --git a/src/main/java/org/runnect/server/publicCourse/repository/PublicCourseRepository.java b/src/main/java/org/runnect/server/publicCourse/repository/PublicCourseRepository.java
index c09ed1a..465cc71 100644
--- a/src/main/java/org/runnect/server/publicCourse/repository/PublicCourseRepository.java
+++ b/src/main/java/org/runnect/server/publicCourse/repository/PublicCourseRepository.java
@@ -22,6 +22,15 @@ public interface PublicCourseRepository  extends JpaRepository<PublicCourse, Lon
 
     List<PublicCourse> findByIdIn(Collection<Long> ids);
 
+    // deletePublicCourses에서 course/runnectUser(권한 검증)와 records(FK 해제)를 전부 순회하며
+    // 지연로딩을 트리거하던 N+1을 없애기 위한 전용 조회 (PublicCourseServiceTest 참고)
+    @Query("SELECT DISTINCT pc FROM PublicCourse pc " +
+            "JOIN FETCH pc.course c " +
+            "JOIN FETCH c.runnectUser " +
+            "LEFT JOIN FETCH pc.records " +
+            "WHERE pc.id IN :ids")
+    List<PublicCourse> findByIdInWithCourseAndRecords(@Param("ids") Collection<Long> ids);
+
     Long countBy();
 
     @Query("SELECT pc " +
diff --git a/src/main/java/org/runnect/server/publicCourse/service/PublicCourseService.java b/src/main/java/org/runnect/server/publicCourse/service/PublicCourseService.java
index 7c40109..65ad29e 100644
--- a/src/main/java/org/runnect/server/publicCourse/service/PublicCourseService.java
+++ b/src/main/java/org/runnect/server/publicCourse/service/PublicCourseService.java
@@ -362,7 +362,7 @@ public DeletePublicCoursesResponseDto deletePublicCourses(
                 .orElseThrow(() -> new NotFoundUserException(ErrorStatus.NOT_FOUND_USER_EXCEPTION,
                         ErrorStatus.NOT_FOUND_USER_EXCEPTION.getMessage()));
 
-        List<PublicCourse> publicCourses = publicCourseRepository.findByIdIn(
+        List<PublicCourse> publicCourses = publicCourseRepository.findByIdInWithCourseAndRecords(
                 requestDto.getPublicCourseIdList());
 
 
diff --git a/src/test/java/org/runnect/server/publicCourse/service/PublicCourseServiceTest.java b/src/test/java/org/runnect/server/publicCourse/service/PublicCourseServiceTest.java
index 50591d2..cf55dfd 100644
--- a/src/test/java/org/runnect/server/publicCourse/service/PublicCourseServiceTest.java
+++ b/src/test/java/org/runnect/server/publicCourse/service/PublicCourseServiceTest.java
@@ -583,7 +583,7 @@ class DeletePublicCourses {
             PublicCourse publicCourse = buildPublicCourse(100L, course);
 
             when(userRepository.findById(1L)).thenReturn(Optional.of(user));
-            when(publicCourseRepository.findByIdIn(Collections.singletonList(100L))).thenReturn(
+            when(publicCourseRepository.findByIdInWithCourseAndRecords(Collections.singletonList(100L))).thenReturn(
                 Collections.singletonList(publicCourse));
 
             DeletePublicCoursesResponseDto response = publicCourseService.deletePublicCourses(1L,
@@ -600,7 +600,7 @@ class DeletePublicCourses {
         void 존재하지_않는_공개코스_포함() {
             RunnectUser user = buildUser(1L);
             when(userRepository.findById(1L)).thenReturn(Optional.of(user));
-            when(publicCourseRepository.findByIdIn(Arrays.asList(100L, 999L))).thenReturn(Collections.emptyList());
+            when(publicCourseRepository.findByIdInWithCourseAndRecords(Arrays.asList(100L, 999L))).thenReturn(Collections.emptyList());
 
             assertThatThrownBy(() -> publicCourseService.deletePublicCourses(1L,
                 new DeletePublicCoursesRequestDto(Arrays.asList(100L, 999L))))
@@ -618,7 +618,7 @@ class DeletePublicCourses {
             PublicCourse othersPublicCourse = buildPublicCourse(101L, buildCourse(11L, otherUser, false));
 
             when(userRepository.findById(1L)).thenReturn(Optional.of(user));
-            when(publicCourseRepository.findByIdIn(Arrays.asList(100L, 101L))).thenReturn(
+            when(publicCourseRepository.findByIdInWithCourseAndRecords(Arrays.asList(100L, 101L))).thenReturn(
                 Arrays.asList(ownPublicCourse, othersPublicCourse));
 
             assertThatThrownBy(() -> publicCourseService.deletePublicCourses(1L,
@@ -637,7 +637,7 @@ class DeletePublicCourses {
             PublicCourse othersPublicCourse = buildPublicCourse(101L, buildCourse(11L, otherUser, false));
 
             when(userRepository.findById(adminId)).thenReturn(Optional.of(admin));
-            when(publicCourseRepository.findByIdIn(Collections.singletonList(101L))).thenReturn(
+            when(publicCourseRepository.findByIdInWithCourseAndRecords(Collections.singletonList(101L))).thenReturn(
                 Collections.singletonList(othersPublicCourse));
 
             DeletePublicCoursesResponseDto response = publicCourseService.deletePublicCourses(adminId,