diff --git a/code/addons/viewport/src/Tool.tsx b/code/addons/viewport/src/Tool.tsx
index dd321b637cf9..ab07949a8afe 100644
--- a/code/addons/viewport/src/Tool.tsx
+++ b/code/addons/viewport/src/Tool.tsx
@@ -127,12 +127,13 @@ export const ViewportTool: FC = memo(
   withTheme(({ theme }: { theme: Theme }) => {
     const {
       viewports = MINIMAL_VIEWPORTS,
+      defaultOrientation = 'portrait',
       defaultViewport = responsiveViewport.id,
       disable,
     } = useParameter<ViewportAddonParameter>(PARAM_KEY, {});
     const [state, setState] = useAddonState<ViewportToolState>(ADDON_ID, {
       selected: defaultViewport,
-      isRotated: false,
+      isRotated: defaultOrientation === 'landscape',
     });
 
     const list = toList(viewports);
diff --git a/code/addons/viewport/src/models/ViewportAddonParameter.ts b/code/addons/viewport/src/models/ViewportAddonParameter.ts
index 190e2beae0ec..875ca46fbc7d 100644
--- a/code/addons/viewport/src/models/ViewportAddonParameter.ts
+++ b/code/addons/viewport/src/models/ViewportAddonParameter.ts
@@ -2,6 +2,7 @@ import type { ViewportMap } from './Viewport';
 
 export interface ViewportAddonParameter {
   disable?: boolean;
+  defaultOrientation?: 'portrait' | 'landscape';
   defaultViewport?: string;
   viewports?: ViewportMap;
 }