diff --git a/app/Http/Controllers/Api/V1/StockController.php b/app/Http/Controllers/Api/V1/StockController.php
index f7cc586..fe9e03e 100644
--- a/app/Http/Controllers/Api/V1/StockController.php
+++ b/app/Http/Controllers/Api/V1/StockController.php
@@ -22,6 +22,7 @@ public function index(Request $request): JsonResponse
         $params = $request->only([
             'search',
             'item_type',
+            'item_category',
             'status',
             'location',
             'sort_by',
diff --git a/app/Services/StockService.php b/app/Services/StockService.php
index 72f043d..e3569cf 100644
--- a/app/Services/StockService.php
+++ b/app/Services/StockService.php
@@ -69,6 +69,11 @@ public function index(array $params): LengthAwarePaginator
             $query->where('items.item_type', strtoupper($params['item_type']));
         }
 
+        // 품목 카테고리 필터 (Item.item_category: BENDING, SCREEN, STEEL 등)
+        if (! empty($params['item_category'])) {
+            $query->where('items.item_category', strtoupper($params['item_category']));
+        }
+
         // 재고 상태 필터 (Stock.status)
         if (! empty($params['status'])) {
             $query->whereHas('stock', function ($q) use ($params) {