diff --git a/src/components/accounting/SalesManagement/index.tsx b/src/components/accounting/SalesManagement/index.tsx
index 8ab7f236..3f4e7c6a 100644
--- a/src/components/accounting/SalesManagement/index.tsx
+++ b/src/components/accounting/SalesManagement/index.tsx
@@ -132,7 +132,7 @@ export function SalesManagement({ initialData, initialPagination }: SalesManagem
 
   // ===== 거래처 목록 (필터용) =====
   const vendorOptions = useMemo(() => {
-    const uniqueVendors = [...new Set(salesData.map(d => d.vendorName))].filter(Boolean);
+    const uniqueVendors = [...new Set(salesData.map(d => d.vendorName))].filter(v => v && v.trim() !== '');
     return uniqueVendors.map(v => ({ value: v, label: v }));
   }, [salesData]);
 
diff --git a/src/components/accounting/SalesManagement/types.ts b/src/components/accounting/SalesManagement/types.ts
index 7bf28962..8f074a87 100644
--- a/src/components/accounting/SalesManagement/types.ts
+++ b/src/components/accounting/SalesManagement/types.ts
@@ -230,7 +230,7 @@ export function transformApiToFrontend(apiData: SaleApiData): SalesRecord {
     salesNo: apiData.sale_number,
     salesDate: apiData.sale_date,
     vendorId: String(apiData.client_id),
-    vendorName: apiData.client?.name || '(거래처 미지정)',
+    vendorName: (apiData.client?.name && apiData.client.name.trim() !== '') ? apiData.client.name : '(거래처 미지정)',
     salesType: 'other', // API에 없음, 기본값
     accountSubject: 'other', // API에 없음, 기본값
     items, // 수주 품목에서 가져옴