diff --git a/change/@react-native-windows-cli-a40f1783-563c-4fcd-b074-1960bd4d254e.json b/change/@react-native-windows-cli-a40f1783-563c-4fcd-b074-1960bd4d254e.json
new file mode 100644
index 00000000000..3dc65cd1b7a
--- /dev/null
+++ b/change/@react-native-windows-cli-a40f1783-563c-4fcd-b074-1960bd4d254e.json
@@ -0,0 +1,7 @@
+{
+  "type": "none",
+  "comment": "Scope various foo and bar test package to rnw-scripts.\"",
+  "packageName": "@react-native-windows/cli",
+  "email": "yicyao@microsoft.com",
+  "dependentChangeType": "none"
+}
diff --git a/change/@react-native-windows-telemetry-6ede3088-858e-4020-98bb-16bf34a5a427.json b/change/@react-native-windows-telemetry-6ede3088-858e-4020-98bb-16bf34a5a427.json
new file mode 100644
index 00000000000..4d39505c9ac
--- /dev/null
+++ b/change/@react-native-windows-telemetry-6ede3088-858e-4020-98bb-16bf34a5a427.json
@@ -0,0 +1,7 @@
+{
+  "type": "none",
+  "comment": "Fix telemetry test.",
+  "packageName": "@react-native-windows/telemetry",
+  "email": "yicyao@microsoft.com",
+  "dependentChangeType": "none"
+}
diff --git a/packages/@react-native-windows/cli/src/e2etest/projects/BarPackage/package.json b/packages/@react-native-windows/cli/src/e2etest/projects/BarPackage/package.json
index dc9e484e09c..76d39423d0c 100644
--- a/packages/@react-native-windows/cli/src/e2etest/projects/BarPackage/package.json
+++ b/packages/@react-native-windows/cli/src/e2etest/projects/BarPackage/package.json
@@ -1,7 +1,7 @@
 {
-  "name": "bar",
+  "name": "@rnw-scripts/bar",
   "version": "1.2.3",
   "description": "Synthetic project.json for testing project.json logic",
   "license": "MIT",
   "private": true
-}
+}
\ No newline at end of file
diff --git a/packages/@react-native-windows/cli/src/e2etest/projects/FooPackage/package.json b/packages/@react-native-windows/cli/src/e2etest/projects/FooPackage/package.json
index 7fe5ca0c508..407fbc6d0ca 100644
--- a/packages/@react-native-windows/cli/src/e2etest/projects/FooPackage/package.json
+++ b/packages/@react-native-windows/cli/src/e2etest/projects/FooPackage/package.json
@@ -1,7 +1,7 @@
 {
-  "name": "foo",
+  "name": "@rnw-scripts/foo",
   "version": "1.2.3",
   "description": "Synthetic project.json for testing project.json logic",
   "license": "MIT",
   "private": true
-}
+}
\ No newline at end of file
diff --git a/packages/@react-native-windows/telemetry/src/test/projectUtils.test.ts b/packages/@react-native-windows/telemetry/src/test/projectUtils.test.ts
index 838d1838faa..3d69f41fa16 100644
--- a/packages/@react-native-windows/telemetry/src/test/projectUtils.test.ts
+++ b/packages/@react-native-windows/telemetry/src/test/projectUtils.test.ts
@@ -74,7 +74,9 @@ test('configToProjectInfo() works with playground project info', async () => {
 
   const projectInfo = info as projectUtils.AppProjectInfo;
 
-  expect(projectInfo.id).toBe(projectUtils.getProjectId('playground'));
+  expect(projectInfo.id).toBe(
+    projectUtils.getProjectId('@rnw-scripts/playground'),
+  );
   expect(projectInfo.platforms).toStrictEqual(['windows']);
   expect(projectInfo.rnwLang).toBe('cpp');
   expect(projectInfo.usesTS).toBe(true);
diff --git a/packages/@react-native-windows/tester/package.json b/packages/@react-native-windows/tester/package.json
index 34d1825b64b..898c649ab8f 100644
--- a/packages/@react-native-windows/tester/package.json
+++ b/packages/@react-native-windows/tester/package.json
@@ -14,7 +14,7 @@
     "@typescript-eslint/eslint-plugin": "^7.1.1",
     "@typescript-eslint/parser": "^7.1.1",
     "flow-enums-runtime": "^0.0.6",
-    "sample-custom-component": "0.0.1"
+    "@rnw-scripts/sample-custom-component": "0.0.1"
   },
   "peerDependencies": {
     "@react-native-picker/picker": "2.11.0",
diff --git a/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/CustomAccessibility.windows.js b/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/CustomAccessibility.windows.js
index 591861b8fa6..a45d76d26b0 100644
--- a/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/CustomAccessibility.windows.js
+++ b/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/CustomAccessibility.windows.js
@@ -2,7 +2,7 @@
 
 import React from 'react';
 import {View} from 'react-native';
-import {CustomAccessibility} from 'sample-custom-component';
+import {CustomAccessibility} from '@rnw-scripts/sample-custom-component';
 import RNTesterText from '../../components/RNTesterText';
 
 const CustomAccessibilityExample = () => {
diff --git a/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/DrawingIsland.windows.js b/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/DrawingIsland.windows.js
index 49ad375e1db..923bc1f3696 100644
--- a/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/DrawingIsland.windows.js
+++ b/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/DrawingIsland.windows.js
@@ -13,7 +13,7 @@
 import React from 'react';
 import {View} from 'react-native';
 
-import {DrawingIsland} from 'sample-custom-component';
+import {DrawingIsland} from '@rnw-scripts/sample-custom-component';
 
 const DrawingIslandExample = () => {
   return (
diff --git a/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/MovingLight.windows.tsx b/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/MovingLight.windows.tsx
index c92045b444b..f0a55f81775 100644
--- a/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/MovingLight.windows.tsx
+++ b/packages/@react-native-windows/tester/src/js/examples-win/NativeComponents/MovingLight.windows.tsx
@@ -2,8 +2,8 @@
 
 import React, { useRef, useState } from 'react';
 import {Button, Text, View} from 'react-native';
-import {MovingLight} from 'sample-custom-component';
-import type {MovingLightHandle} from 'sample-custom-component';
+import {MovingLight} from '@rnw-scripts/sample-custom-component';
+import type {MovingLightHandle} from '@rnw-scripts/sample-custom-component';
 
 const colors = ['white', 'red', 'green', 'blue'];
 
diff --git a/packages/@react-native-windows/tester/src/js/examples-win/XAML/FabricXamlExample.js b/packages/@react-native-windows/tester/src/js/examples-win/XAML/FabricXamlExample.js
index fe0680ec259..aa3365ab999 100644
--- a/packages/@react-native-windows/tester/src/js/examples-win/XAML/FabricXamlExample.js
+++ b/packages/@react-native-windows/tester/src/js/examples-win/XAML/FabricXamlExample.js
@@ -12,7 +12,7 @@
 
 import React, {useState} from 'react';
 import {Alert, Button, Text, View, ScrollView} from 'react-native';
-import {CalendarView} from 'sample-custom-component';
+import {CalendarView} from '@rnw-scripts/sample-custom-component';
 
 const XamlContentExample = () => {
   const [selectedDate, setSelectedDate] = useState(true);
diff --git a/packages/debug-test/package.json b/packages/debug-test/package.json
index 77502c06f9c..3ee8756f42b 100644
--- a/packages/debug-test/package.json
+++ b/packages/debug-test/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "debug-test",
+  "name": "@rnw-scripts/debug-test",
   "version": "0.0.0",
   "private": true,
   "scripts": {
@@ -19,4 +19,4 @@
     "ts-jest": "^29.0.3",
     "ws": "^6.2.2"
   }
-}
+}
\ No newline at end of file
diff --git a/packages/e2e-test-app-fabric/package.json b/packages/e2e-test-app-fabric/package.json
index bb71676404e..bfc707a6322 100644
--- a/packages/e2e-test-app-fabric/package.json
+++ b/packages/e2e-test-app-fabric/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "e2e-test-app-fabric",
+  "name": "@rnw-scripts/e2e-test-app-fabric",
   "version": "0.0.0",
   "private": true,
   "scripts": {
diff --git a/packages/playground/Samples/xamlPopupBug.tsx b/packages/playground/Samples/xamlPopupBug.tsx
index db5459005eb..7ad48259787 100644
--- a/packages/playground/Samples/xamlPopupBug.tsx
+++ b/packages/playground/Samples/xamlPopupBug.tsx
@@ -12,7 +12,7 @@
 
 import React from 'react';
 import {AppRegistry, ScrollView, View, Text, StyleSheet} from 'react-native';
-import {ComboBox} from 'sample-custom-component';
+import {ComboBox} from '@rnw-scripts/sample-custom-component';
 
 const XamlPopupBugRepro = () => {
   const [selectedValue, setSelectedValue] = React.useState('(click to select)');
diff --git a/packages/playground/package.json b/packages/playground/package.json
index db972600594..a32f3297118 100644
--- a/packages/playground/package.json
+++ b/packages/playground/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "playground",
+  "name": "@rnw-scripts/playground",
   "version": "0.0.54",
   "private": true,
   "scripts": {
@@ -34,9 +34,9 @@
     "just-scripts": "^1.3.3",
     "prettier": "2.8.8",
     "react-test-renderer": "19.0.0",
-    "sample-custom-component": "0.0.1"
+    "@rnw-scripts/sample-custom-component": "0.0.1"
   },
   "engines": {
     "node": ">= 22"
   }
-}
+}
\ No newline at end of file
diff --git a/packages/sample-app-fabric/package.json b/packages/sample-app-fabric/package.json
index f13626a77e8..b16c0e82b3e 100644
--- a/packages/sample-app-fabric/package.json
+++ b/packages/sample-app-fabric/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "sample-app-fabric",
+  "name": "@rnw-scripts/sample-app-fabric",
   "version": "0.0.1",
   "private": true,
   "scripts": {
diff --git a/packages/sample-custom-component/package.json b/packages/sample-custom-component/package.json
index 4f434157483..c04a6e93b4a 100644
--- a/packages/sample-custom-component/package.json
+++ b/packages/sample-custom-component/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "sample-custom-component",
+  "name": "@rnw-scripts/sample-custom-component",
   "version": "0.0.1",
   "private": true,
   "scripts": {