diff --git a/.changeset/new-waves-rule.md b/.changeset/new-waves-rule.md
new file mode 100644
index 0000000000..abea57d81b
--- /dev/null
+++ b/.changeset/new-waves-rule.md
@@ -0,0 +1,5 @@
+---
+'@backstage/core-app-api': patch
+---
+
+Remove deprecated `@backstage/core-app-api@createApp` which has been replaced by `@backstage/app-defaults#createApp`
diff --git a/packages/core-app-api/api-report.md b/packages/core-app-api/api-report.md
index 78bfd83251..e963f64465 100644
--- a/packages/core-app-api/api-report.md
+++ b/packages/core-app-api/api-report.md
@@ -26,7 +26,6 @@ import { bitbucketAuthApiRef } from '@backstage/core-plugin-api';
 import { ComponentType } from 'react';
 import { Config } from '@backstage/config';
 import { ConfigReader } from '@backstage/config';
-import { createApp as createApp_2 } from '@backstage/app-defaults';
 import { DiscoveryApi } from '@backstage/core-plugin-api';
 import { ErrorApi } from '@backstage/core-plugin-api';
 import { ErrorApiError } from '@backstage/core-plugin-api';
@@ -201,6 +200,8 @@ export type AppIcons = {
   warning: IconComponent;
 };
 
+// Warning: (ae-unresolved-link) The @link reference could not be resolved: The package "@backstage/core-app-api" does not have an export "createApp"
+//
 // @public
 export type AppOptions = {
   apis?: Iterable<AnyApiFactory>;
@@ -222,6 +223,8 @@ export type AppOptions = {
   bindRoutes?(context: { bind: AppRouteBinder }): void;
 };
 
+// Warning: (ae-unresolved-link) The @link reference could not be resolved: The package "@backstage/core-app-api" does not have an export "createApp"
+//
 // @public
 export type AppRouteBinder = <
   ExternalRoutes extends {
@@ -269,6 +272,8 @@ export type AuthApiCreateOptions = {
   provider?: AuthProviderInfo;
 };
 
+// Warning: (ae-unresolved-link) The @link reference could not be resolved: The package "@backstage/core-app-api" does not have an export "createApp"
+//
 // @public
 export type BackstageApp = {
   getPlugins(): BackstagePlugin<any, any>[];
@@ -315,11 +320,6 @@ export type BootErrorPageProps = {
 
 export { ConfigReader };
 
-// @public @deprecated
-export function createApp(
-  options?: Parameters<typeof createApp_2>[0],
-): BackstageApp & AppContext;
-
 // @public
 export function createFetchApi(options: {
   baseImplementation?: typeof fetch | undefined;
diff --git a/packages/core-app-api/src/app/createApp.tsx b/packages/core-app-api/src/app/createApp.tsx
deleted file mode 100644
index b2a21634d3..0000000000
--- a/packages/core-app-api/src/app/createApp.tsx
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright 2020 The Backstage Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import { createApp as createDefaultApp } from '@backstage/app-defaults';
-import { AppContext, BackstageApp } from './types';
-
-/**
- * Creates a new Backstage App.
- *
- * @deprecated Use {@link @backstage/app-defaults#createApp} from `@backstage/app-defaults` instead
- * @param options - A set of options for creating the app
- * @public
- */
-export function createApp(
-  options?: Parameters<typeof createDefaultApp>[0],
-): BackstageApp & AppContext {
-  // eslint-disable-next-line no-console
-  console.warn(
-    'DEPRECATION WARNING: The createApp function from @backstage/core-app-api will soon be removed, ' +
-      'migrate to importing createApp from the @backstage/app-defaults package instead. ' +
-      'If you do not wish to use a standard app configuration but instead supply all options yourself ' +
-      ' you can use createSpecializedApp from @backstage/core-app-api instead.',
-  );
-  return createDefaultApp(options) as BackstageApp & AppContext;
-}
diff --git a/packages/core-app-api/src/app/index.ts b/packages/core-app-api/src/app/index.ts
index 5ea5405632..7843b36339 100644
--- a/packages/core-app-api/src/app/index.ts
+++ b/packages/core-app-api/src/app/index.ts
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-export { createApp } from './createApp';
 export { createSpecializedApp } from './createSpecializedApp';
 export { defaultConfigLoader } from './defaultConfigLoader';
 export * from './types';