diff --git a/proj-acquirex/src/main/java/com/acquirex/approval/repository/AcquisitionApprovalRepository.java b/proj-acquirex/src/main/java/com/acquirex/approval/repository/AcquisitionApprovalRepository.java
new file mode 100644
index 0000000..4391c87
--- /dev/null
+++ b/proj-acquirex/src/main/java/com/acquirex/approval/repository/AcquisitionApprovalRepository.java
@@ -0,0 +1,18 @@
+package com.acquirex.approval.repository;
+
+import com.acquirex.approval.domain.AcquisitionApproval;
+import com.acquirex.approval.domain.AcquisitionApproval.ApprovalStatus;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Optional;
+
+/** 카드 매입 승인 레포지토리 - Spring Boot 3: Spring Data JPA 3.x 호환 */
+@Repository
+public interface AcquisitionApprovalRepository extends JpaRepository<AcquisitionApproval, Long> {
+    Optional<AcquisitionApproval> findByApprovalNumber(String approvalNumber);
+    List<AcquisitionApproval> findByMerchantIdAndStatus(String merchantId, ApprovalStatus status);
+    List<AcquisitionApproval> findByApprovalDatetimeBetween(LocalDateTime start, LocalDateTime end);
+}
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