diff --git a/app/Http/Middleware/LogApiRequest.php b/app/Http/Middleware/LogApiRequest.php
index ff64a4a..93a2c0e 100644
--- a/app/Http/Middleware/LogApiRequest.php
+++ b/app/Http/Middleware/LogApiRequest.php
@@ -77,6 +77,15 @@ protected function logRequest(Request $request, Response $response, float $start
         try {
             $durationMs = (int) ((microtime(true) - $startTime) * 1000);
 
+            // 사용자/테넌트 정보 가져오기 (ApiKeyMiddleware에서 설정된 값 우선)
+            $apiUser = app()->bound('api_user') ? app('api_user') : null;
+            $tenantId = app()->bound('tenant_id') ? app('tenant_id') : null;
+            $userId = $apiUser?->id ?? $request->user()?->id;
+            $tenantId = $tenantId ?? $request->user()?->current_tenant_id;
+
+            // 그룹 ID 생성 (동일 tenant+user의 연속 요청 묶기)
+            $groupId = $this->getOrCreateGroupId($tenantId, $userId);
+
             $logData = [
                 'method' => $request->method(),
                 'url' => $request->fullUrl(),
@@ -89,8 +98,9 @@ protected function logRequest(Request $request, Response $response, float $start
                 'duration_ms' => $durationMs,
                 'ip_address' => $request->ip(),
                 'user_agent' => $request->userAgent(),
-                'user_id' => $request->user()?->id,
-                'tenant_id' => $request->user()?->current_tenant_id ?? null,
+                'user_id' => $userId,
+                'tenant_id' => $tenantId,
+                'group_id' => $groupId,
             ];
 
             // DB 저장
@@ -163,4 +173,29 @@ protected function writeToLogFile(array $logData): void
             'response_status' => $logData['response_status'],
         ]);
     }
+
+    /**
+     * 그룹 ID 생성 또는 기존 그룹 ID 반환
+     * 동일 tenant+user의 5초 내 요청은 같은 그룹으로 묶음
+     */
+    protected function getOrCreateGroupId(?int $tenantId, ?int $userId): string
+    {
+        $cacheKey = "api_log_group:{$tenantId}:{$userId}";
+        $groupTtl = 5; // 5초 내 요청은 같은 그룹
+
+        // 캐시에서 기존 그룹 ID 확인
+        $existingGroupId = cache()->get($cacheKey);
+
+        if ($existingGroupId) {
+            // TTL 갱신 (연속 요청 시 그룹 유지)
+            cache()->put($cacheKey, $existingGroupId, $groupTtl);
+            return $existingGroupId;
+        }
+
+        // 새 그룹 ID 생성
+        $newGroupId = now()->format('Ymd_His_') . substr(md5(uniqid((string) mt_rand(), true)), 0, 8);
+        cache()->put($cacheKey, $newGroupId, $groupTtl);
+
+        return $newGroupId;
+    }
 }
\ No newline at end of file
diff --git a/app/Models/ApiRequestLog.php b/app/Models/ApiRequestLog.php
index 151efb3..931e91f 100644
--- a/app/Models/ApiRequestLog.php
+++ b/app/Models/ApiRequestLog.php
@@ -21,6 +21,7 @@
  * @property string|null $user_agent
  * @property int|null $user_id
  * @property int|null $tenant_id
+ * @property string|null $group_id
  * @property \Carbon\Carbon $created_at
  */
 class ApiRequestLog extends Model
@@ -41,6 +42,7 @@ class ApiRequestLog extends Model
         'user_agent',
         'user_id',
         'tenant_id',
+        'group_id',
     ];
 
     protected $casts = [
diff --git a/database/migrations/2025_12_15_160033_add_group_id_to_api_request_logs_table.php b/database/migrations/2025_12_15_160033_add_group_id_to_api_request_logs_table.php
new file mode 100644
index 0000000..9ce4559
--- /dev/null
+++ b/database/migrations/2025_12_15_160033_add_group_id_to_api_request_logs_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('api_request_logs', function (Blueprint $table) {
+            $table->string('group_id', 50)->nullable()->after('tenant_id')->comment('요청 그룹 ID (연관 API 묶음)');
+            $table->index('group_id');
+            $table->index(['tenant_id', 'user_id', 'created_at']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('api_request_logs', function (Blueprint $table) {
+            $table->dropIndex(['group_id']);
+            $table->dropIndex(['tenant_id', 'user_id', 'created_at']);
+            $table->dropColumn('group_id');
+        });
+    }
+};