diff --git a/AGENTS.md b/AGENTS.md
index 6e1c712a..3fcb3742 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -101,6 +101,7 @@ All work in this repository MUST follow `docs/CURRENT/WBS_EXECUTION_PROCEDURES.m
 - **[CRITICAL IRON RULE] Standardized Loading Skeleton Rule**: ALL screen-level and section-level data loading MUST render animated `SkeletonLoader` (shimmer mode) matching the expected layout (e.g. `skeletonType="table"` for grids, `skeletonType="card"` for forms/summaries) through `QueryStateBoundary`/`StandardScreenBoundary`. Static text ("불러오는 중...") or empty screen placeholders during loading states are STRICTLY PROHIBITED.
 - **[CRITICAL IRON RULE] Standardized Empty Data State Rule**: When zero records or empty dataset states occur, ALL grids, lists, and summary cards MUST render standard `EmptyStatePlaceholder` component (`📭` icon, clear title, descriptive helper text, and optional recovery action button). Blank white spaces or plain `<p>데이터가 없습니다</p>` text tags are STRICTLY PROHIBITED.
 - **[CRITICAL IRON RULE] Standardized UI Component Scale & Density Rule**: ALL UI components (grids, inputs, buttons, select, date fields, cards) MUST strictly inherit central Design System Tokens (`tokens.css` / `base.css`). Custom inline height/font overrides are STRICTLY PROHIBITED. Grid header height (`30px`), row height (`28px`), control height (`28px`), and grid font size (`12px`) MUST be universally uniform across all screens.
+- **[CRITICAL IRON RULE] Standardized Grid Row Numbering Rule**: Unless explicitly disabled (`showRowNumber: false`), ALL data grids MUST automatically prepend a pinned left `No.` column rendering 1-indexed sequential row numbers (`node.rowIndex + 1`) centered with `54px` fixed width.
 
 ## v16.0 Gitea API & CI/CD Automation
 
diff --git a/frontend/current_screen.png b/frontend/current_screen.png
index 85448f77..83375298 100644
Binary files a/frontend/current_screen.png and b/frontend/current_screen.png differ
diff --git a/frontend/src/shared/ui/components/KsDataGrid.vue b/frontend/src/shared/ui/components/KsDataGrid.vue
index dee22d00..161b7308 100644
--- a/frontend/src/shared/ui/components/KsDataGrid.vue
+++ b/frontend/src/shared/ui/components/KsDataGrid.vue
@@ -7,17 +7,38 @@ import type { UiGridColumn } from '../adapter/contracts'
 ModuleRegistry.registerModules([ClientSideRowModelModule, TextFilterModule, RowSelectionModule])
 
 const emit = defineEmits<{ rowSelected: [row: unknown] }>()
-const props = withDefaults(defineProps<{ rows: unknown[]; columns: UiGridColumn[]; loading?: boolean; height?: string; rowSelection?: 'single' | 'multiple' | 'none' }>(), { loading: false, height: '32rem', rowSelection: 'single' })
-const columnDefs = computed<ColDef[]>(() => props.columns.map(column => ({
-  field: column.field,
-  headerName: column.header,
-  width: column.width,
-  minWidth: column.minWidth ?? 80,
-  flex: column.flex ?? (column.width ? undefined : 1),
-  sortable: column.sortable ?? true,
-  filter: column.filterable ?? true,
-  valueFormatter: column.formatter ? params => column.formatter?.(params.value, params.data) ?? '' : undefined
-})))
+const props = withDefaults(defineProps<{ rows: unknown[]; columns: UiGridColumn[]; loading?: boolean; height?: string; rowSelection?: 'single' | 'multiple' | 'none'; showRowNumber?: boolean }>(), { loading: false, height: '32rem', rowSelection: 'single', showRowNumber: true })
+const columnDefs = computed<ColDef[]>(() => {
+  const mappedCols: ColDef[] = props.columns.map(column => ({
+    field: column.field,
+    headerName: column.header,
+    width: column.width,
+    minWidth: column.minWidth ?? 80,
+    flex: column.flex ?? (column.width ? undefined : 1),
+    sortable: column.sortable ?? true,
+    filter: column.filterable ?? true,
+    valueFormatter: column.formatter ? params => column.formatter?.(params.value, params.data) ?? '' : undefined
+  }))
+
+  if (props.showRowNumber) {
+    const rowNumCol: ColDef = {
+      headerName: 'No.',
+      valueGetter: 'node.rowIndex + 1',
+      width: 54,
+      minWidth: 50,
+      maxWidth: 65,
+      pinned: 'left',
+      sortable: false,
+      filter: false,
+      resizable: false,
+      cellStyle: { textAlign: 'center', color: 'var(--ks-color-neutral-600)', fontSize: '11px' },
+      headerClass: 'ks-row-number-header'
+    }
+    return [rowNumCol, ...mappedCols]
+  }
+
+  return mappedCols
+})
 const rowSelectionOptions = computed(() => props.rowSelection === 'none' ? undefined : ({ mode: props.rowSelection === 'multiple' ? 'multiRow' : 'singleRow' } as const))
 function onRowClicked(event: RowClickedEvent): void {
   if (event.data) emit('rowSelected', event.data)