diff --git a/packages/typescript-eslint/src/config-helper.ts b/packages/typescript-eslint/src/config-helper.ts
index 847047f37098..77085838c76a 100644
--- a/packages/typescript-eslint/src/config-helper.ts
+++ b/packages/typescript-eslint/src/config-helper.ts
@@ -91,16 +91,16 @@ export function config(
       return config;
     }
 
-    const extension = {
-      ...(config.files && { files: config.files }),
-      ...(config.ignores && { ignores: config.ignores }),
-    };
-
     return [
-      ...extendsArr.map(conf => ({
-        ...conf,
-        ...extension,
-      })),
+      ...extendsArr.map(extension => {
+        const name = [config.name, extension.name].filter(Boolean).join('__');
+        return {
+          ...extension,
+          ...(config.files && { files: config.files }),
+          ...(config.ignores && { ignores: config.ignores }),
+          ...(name && { name }),
+        };
+      }),
       config,
     ];
   });
diff --git a/packages/typescript-eslint/tests/configs.test.ts b/packages/typescript-eslint/tests/configs.test.ts
index 61f4f2a92dc9..63bf079e1b79 100644
--- a/packages/typescript-eslint/tests/configs.test.ts
+++ b/packages/typescript-eslint/tests/configs.test.ts
@@ -367,4 +367,100 @@ describe('config helper', () => {
       },
     ]);
   });
+
+  it('flattens extended configs with config name', () => {
+    expect(
+      plugin.config({
+        extends: [{ rules: { rule1: 'error' } }, { rules: { rule2: 'error' } }],
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config',
+        rules: { rule: 'error' },
+      }),
+    ).toEqual([
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config',
+        rules: { rule1: 'error' },
+      },
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config',
+        rules: { rule2: 'error' },
+      },
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config',
+        rules: { rule: 'error' },
+      },
+    ]);
+  });
+
+  it('flattens extended configs with names if base config is unnamed', () => {
+    expect(
+      plugin.config({
+        extends: [
+          { name: 'extension-1', rules: { rule1: 'error' } },
+          { rules: { rule2: 'error' } },
+        ],
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        rules: { rule: 'error' },
+      }),
+    ).toEqual([
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'extension-1',
+        rules: { rule1: 'error' },
+      },
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        rules: { rule2: 'error' },
+      },
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        rules: { rule: 'error' },
+      },
+    ]);
+  });
+
+  it('merges config items names', () => {
+    expect(
+      plugin.config({
+        extends: [
+          { name: 'extension-1', rules: { rule1: 'error' } },
+          { rules: { rule2: 'error' } },
+        ],
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config',
+        rules: { rule: 'error' },
+      }),
+    ).toEqual([
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config__extension-1',
+        rules: { rule1: 'error' },
+      },
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config',
+        rules: { rule2: 'error' },
+      },
+      {
+        files: ['common-file'],
+        ignores: ['common-ignored'],
+        name: 'my-config',
+        rules: { rule: 'error' },
+      },
+    ]);
+  });
 });