diff --git a/apps/characters/tasks.py b/apps/characters/tasks.py
index 359d2cc..28f7c8c 100644
--- a/apps/characters/tasks.py
+++ b/apps/characters/tasks.py
@@ -137,6 +137,15 @@ def reset_image_gen_count() -> None:
     ImgGenLog.objects.filter(created_at__lt=today_start).delete()
 
 
+def _refund_daily_gen(img_gen_log_id: int | None) -> None:
+    """제출 시점에 차감했던 일일 생성 횟수를 환불한다(해당 ImgGenLog 만 삭제)."""
+    if img_gen_log_id is None:
+        return
+    from apps.characters.models import ImgGenLog
+
+    ImgGenLog.objects.filter(pk=img_gen_log_id).delete()
+
+
 @shared_task(bind=True, max_retries=3)
 def process_character_generation_job(
     self, job_id: str, name: str, persona: str, img_gen_log_id: int | None = None
@@ -151,6 +160,11 @@ def process_character_generation_job(
     except CharacterGenerationJob.DoesNotExist:
         return
 
+    # 시작 전에 취소(FAILED)됐으면 처리하지 않고 환불 후 종료한다.
+    if job.status == CharacterGenerationJob.Status.FAILED:
+        _refund_daily_gen(img_gen_log_id)
+        return
+
     job.status = CharacterGenerationJob.Status.IN_PROGRESS
     job.save(update_fields=["status", "updated_at"])
 
@@ -195,6 +209,12 @@ def process_character_generation_job(
             base_url=base_url, ai_job_id=ai_job_id, headers=headers
         )
 
+        # 생성 도중 사용자가 취소(FAILED)했으면 결과를 폐기하고 환불 후 종료한다.
+        job.refresh_from_db(fields=["status"])
+        if job.status == CharacterGenerationJob.Status.FAILED:
+            _refund_daily_gen(img_gen_log_id)
+            return
+
         # compose 단계에서 버려지는 구조화 데이터(유저 원본 입력 + LLM raw 출력)를
         # 감사 로그로 S3 에 보존한다. best-effort — 실패해도 생성 잡은 계속 진행한다.
         _save_generation_audit_log(
@@ -228,7 +248,4 @@ def process_character_generation_job(
         job.status = CharacterGenerationJob.Status.FAILED
         job.save(update_fields=["status", "updated_at"])
         # 생성 실패 시 제출 시점에 차감했던 일일 생성 횟수를 환불한다(해당 로그만 삭제).
-        if img_gen_log_id is not None:
-            from apps.characters.models import ImgGenLog
-
-            ImgGenLog.objects.filter(pk=img_gen_log_id).delete()
+        _refund_daily_gen(img_gen_log_id)
diff --git a/apps/characters/urls.py b/apps/characters/urls.py
index 534cc26..5226733 100644
--- a/apps/characters/urls.py
+++ b/apps/characters/urls.py
@@ -3,6 +3,7 @@
 from apps.characters.views import (
     CharacterDetailView,
     CharacterListView,
+    GenerationJobCancelView,
     GenerationJobCreateView,
     GenerationJobDetailView,
     GenerationQuotaView,
@@ -22,6 +23,11 @@
         GenerationQuotaView.as_view(),
         name="generation-quota",
     ),
+    path(
+        "generation-jobs/<uuid:job_id>/cancel/",
+        GenerationJobCancelView.as_view(),
+        name="generation-job-cancel",
+    ),
     path(
         "generation-jobs/<uuid:job_id>/",
         GenerationJobDetailView.as_view(),
diff --git a/apps/characters/views.py b/apps/characters/views.py
index fd775cd..3d4d13a 100644
--- a/apps/characters/views.py
+++ b/apps/characters/views.py
@@ -227,6 +227,35 @@ def get(self, request: Request, job_id: uuid.UUID) -> Response:
         return Response(serializer.data)
 
 
+class GenerationJobCancelView(APIView):
+    """생성 중인 Job을 취소한다(QUEUED/IN_PROGRESS만 가능).
+
+    status 를 FAILED 로 표시(취소 신호)하면, 실행 중인 태스크가 체크포인트에서
+    결과를 폐기하고 제출 시점에 차감했던 일일 생성 횟수(ImgGenLog)를 환불한다.
+    이미 SUCCEEDED/CONSUMED/FAILED 면 취소 불가(409).
+    """
+
+    permission_classes = (IsAuthenticated,)
+
+    def post(self, request: Request, job_id: uuid.UUID) -> Response:
+        try:
+            job = CharacterGenerationJob.objects.get(job_id=job_id, user=request.user)
+        except CharacterGenerationJob.DoesNotExist:
+            return Response({"error": "NOT_FOUND"}, status=status.HTTP_404_NOT_FOUND)
+
+        if job.status not in (
+            CharacterGenerationJob.Status.QUEUED,
+            CharacterGenerationJob.Status.IN_PROGRESS,
+        ):
+            return Response(
+                {"error": "JOB_NOT_CANCELABLE"}, status=status.HTTP_409_CONFLICT
+            )
+
+        job.status = CharacterGenerationJob.Status.FAILED
+        job.save(update_fields=["status", "updated_at"])
+        return Response({"job_id": job.job_id, "status": job.status})
+
+
 class GenerationQuotaView(APIView):
     """오늘의 캐릭터 생성 횟수(used)와 일일 한도(limit)를 반환한다."""