diff --git a/src/main/java/kr/tennispark/web/activity/application/service/WebActivityApplicationQueryService.java b/src/main/java/kr/tennispark/web/activity/application/service/WebActivityApplicationQueryService.java
index d940745..dd513dd 100644
--- a/src/main/java/kr/tennispark/web/activity/application/service/WebActivityApplicationQueryService.java
+++ b/src/main/java/kr/tennispark/web/activity/application/service/WebActivityApplicationQueryService.java
@@ -2,6 +2,7 @@
 
 import java.time.LocalDate;
 import java.util.List;
+
 import kr.tennispark.activity.common.domain.Activity;
 import kr.tennispark.activity.common.domain.ActivityApplication;
 import kr.tennispark.activity.common.domain.enums.ActivityType;
@@ -11,7 +12,9 @@
 import kr.tennispark.web.activity.infrastructure.repository.WebAdminActivityRepository;
 import kr.tennispark.web.activity.presentation.dto.ActivityApplicationRowDTO;
 import kr.tennispark.web.activity.presentation.dto.GetWeeklyActivityApplicationsResponse;
+import kr.tennispark.web.activity.presentation.dto.GetActivityApplicationsResponse;
 import lombok.RequiredArgsConstructor;
+
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -23,20 +26,47 @@ public class WebActivityApplicationQueryService {
     private final WebAdminActivityRepository activityRepository;
     private final WebAdminActivityApplicationRepository applicationRepository;
 
+    /**
+     * 기존 기능 — 이번 주 활동 조회
+     */
     public GetWeeklyActivityApplicationsResponse getThisWeeksApplication(ActivityType type) {
+
         LocalDate fromDate = WeekPeriod.thisWeek().start();
 
         List<Activity> activities = activityRepository.findFromDate(fromDate, type);
 
         List<ActivityApplicationRowDTO> rows = activities.stream()
                 .map(a -> {
-                    List<ActivityApplication> approved = applicationRepository.findAllByActivityAndStatus(
-                            a, ApplicationStatus.APPROVED
-                    );
+                    List<ActivityApplication> approved =
+                            applicationRepository.findAllByActivityAndStatus(a, ApplicationStatus.APPROVED);
                     return ActivityApplicationRowDTO.of(a, approved);
                 })
                 .toList();
 
         return new GetWeeklyActivityApplicationsResponse(rows);
     }
+
+    /**
+     * 신규 기능 — 기간 조회
+     */
+    public GetActivityApplicationsResponse getApplications(
+            ActivityType type,
+            LocalDate fromDate,
+            LocalDate toDate
+    ) {
+        System.out.println("[DEBUG] type = " + type);
+        System.out.println("[DEBUG] fromDate = " + fromDate);
+        System.out.println("[DEBUG] toDate = " + toDate);
+        List<Activity> activities = activityRepository.findActivities(type, fromDate, toDate);
+
+        List<ActivityApplicationRowDTO> rows = activities.stream()
+                .map(a -> {
+                    List<ActivityApplication> approved =
+                            applicationRepository.findAllByActivityAndStatus(a, ApplicationStatus.APPROVED);
+                    return ActivityApplicationRowDTO.of(a, approved);
+                })
+                .toList();
+
+        return new GetActivityApplicationsResponse(rows);
+    }
 }
diff --git a/src/main/java/kr/tennispark/web/activity/infrastructure/repository/WebAdminActivityRepository.java b/src/main/java/kr/tennispark/web/activity/infrastructure/repository/WebAdminActivityRepository.java
index 56dacc0..ea49bee 100644
--- a/src/main/java/kr/tennispark/web/activity/infrastructure/repository/WebAdminActivityRepository.java
+++ b/src/main/java/kr/tennispark/web/activity/infrastructure/repository/WebAdminActivityRepository.java
@@ -2,8 +2,10 @@
 
 import java.time.LocalDate;
 import java.util.List;
+
 import kr.tennispark.activity.common.domain.Activity;
 import kr.tennispark.activity.common.domain.enums.ActivityType;
+
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
@@ -12,14 +14,37 @@
 @Repository
 public interface WebAdminActivityRepository extends JpaRepository<Activity, Long> {
 
+    /**
+     * 기존 API — 특정 날짜 이후 조회 (이번 주)
+     */
     @Query("""
             SELECT a
             FROM Activity a
             WHERE a.date >= :fromDate
-            AND a.type = :type
+              AND a.type = :type
               AND a.status = true
             ORDER BY a.date ASC, a.scheduledTime.beginAt ASC, a.id ASC
             """)
-    List<Activity> findFromDate(@Param("fromDate") LocalDate fromDate, ActivityType type);
+    List<Activity> findFromDate(
+            @Param("fromDate") LocalDate fromDate,
+            @Param("type") ActivityType type
+    );
 
+    /**
+     * 신규 기능 — 날짜 범위 조회
+     */
+    @Query("""
+            SELECT a
+            FROM Activity a
+            WHERE (:fromDate IS NULL OR a.date >= :fromDate)
+              AND (:toDate IS NULL OR a.date <= :toDate)
+              AND a.type = :type
+              AND a.status = true
+            ORDER BY a.date ASC, a.scheduledTime.beginAt ASC, a.id ASC
+            """)
+    List<Activity> findActivities(
+            @Param("type") ActivityType type,
+            @Param("fromDate") LocalDate fromDate,
+            @Param("toDate") LocalDate toDate
+    );
 }
diff --git a/src/main/java/kr/tennispark/web/activity/presentation/controller/WebAdminActivityQueryController.java b/src/main/java/kr/tennispark/web/activity/presentation/controller/WebAdminActivityQueryController.java
index 352ef78..4d4ad8d 100644
--- a/src/main/java/kr/tennispark/web/activity/presentation/controller/WebAdminActivityQueryController.java
+++ b/src/main/java/kr/tennispark/web/activity/presentation/controller/WebAdminActivityQueryController.java
@@ -5,12 +5,13 @@
 import kr.tennispark.common.utils.ApiUtils.ApiResult;
 import kr.tennispark.web.activity.application.service.WebActivityApplicationQueryService;
 import kr.tennispark.web.activity.presentation.dto.GetWeeklyActivityApplicationsResponse;
+import kr.tennispark.web.activity.presentation.dto.GetActivityApplicationsResponse;
 import lombok.RequiredArgsConstructor;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+
+import java.time.LocalDate;
 
 @RestController
 @RequiredArgsConstructor
@@ -19,11 +20,32 @@ public class WebAdminActivityQueryController {
 
     private final WebActivityApplicationQueryService activityApplicationQueryService;
 
+    /**
+     * 기존 API — 이번 주 활동 조회
+     */
     @GetMapping("/applications/week")
-    public ResponseEntity<ApiResult<GetWeeklyActivityApplicationsResponse>> getWeeklyApplications(@RequestParam
-                                                                                                  ActivityType type) {
-        GetWeeklyActivityApplicationsResponse response = activityApplicationQueryService.getThisWeeksApplication(type);
+    public ResponseEntity<ApiResult<GetWeeklyActivityApplicationsResponse>> getWeeklyApplications(
+            @RequestParam ActivityType type
+    ) {
+        GetWeeklyActivityApplicationsResponse response =
+                activityApplicationQueryService.getThisWeeksApplication(type);
         return ResponseEntity.ok(ApiUtils.success(response));
     }
 
+    /**
+     * 신규 API — 기간 조회 (/applications/search)
+     * LocalDate 파싱 명확화(@DateTimeFormat)
+     */
+    @GetMapping("/applications/search")
+    public ResponseEntity<ApiResult<GetActivityApplicationsResponse>> searchApplications(
+            @RequestParam ActivityType type,
+            @RequestParam(required = false)
+            @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate fromDate,
+            @RequestParam(required = false)
+            @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate toDate
+    ) {
+        GetActivityApplicationsResponse response =
+                activityApplicationQueryService.getApplications(type, fromDate, toDate);
+        return ResponseEntity.ok(ApiUtils.success(response));
+    }
 }
diff --git a/src/main/java/kr/tennispark/web/activity/presentation/dto/GetActivityApplicationsResponse.java b/src/main/java/kr/tennispark/web/activity/presentation/dto/GetActivityApplicationsResponse.java
new file mode 100644
index 0000000..82d8ac0
--- /dev/null
+++ b/src/main/java/kr/tennispark/web/activity/presentation/dto/GetActivityApplicationsResponse.java
@@ -0,0 +1,8 @@
+package kr.tennispark.web.activity.presentation.dto;
+
+import java.util.List;
+
+public record GetActivityApplicationsResponse(
+        List<ActivityApplicationRowDTO> rows
+) {
+}