diff --git a/packages/addon-dev/src/rollup-app-reexports.ts b/packages/addon-dev/src/rollup-app-reexports.ts
index 7f9a3a15d..0e87da532 100644
--- a/packages/addon-dev/src/rollup-app-reexports.ts
+++ b/packages/addon-dev/src/rollup-app-reexports.ts
@@ -6,22 +6,25 @@ export default function appReexports(opts: {
   from: string;
   to: string;
   include: string[];
+  mapFilename?: (filename: string) => string;
 }): Plugin {
   return {
     name: 'app-reexports',
     generateBundle(_, bundle) {
       let pkg = readJsonSync('package.json');
       let appJS: Record<string, string> = {};
-      for (let filename of Object.keys(bundle)) {
+      for (let addonFilename of Object.keys(bundle)) {
+        let appFilename = opts.mapFilename?.(addonFilename) ?? addonFilename;
+
         if (
-          opts.include.some((glob) => minimatch(filename, glob)) &&
-          !minimatch(filename, '**/*.d.ts')
+          opts.include.some((glob) => minimatch(addonFilename, glob)) &&
+          !minimatch(addonFilename, '**/*.d.ts')
         ) {
-          appJS[`./${filename}`] = `./dist/_app_/${filename}`;
+          appJS[`./${appFilename}`] = `./dist/_app_/${appFilename}`;
           this.emitFile({
             type: 'asset',
-            fileName: `_app_/${filename}`,
-            source: `export { default } from "${pkg.name}/${filename}";\n`,
+            fileName: `_app_/${appFilename}`,
+            source: `export { default } from "${pkg.name}/${addonFilename}";\n`,
           });
         }
       }
diff --git a/packages/addon-dev/src/rollup.ts b/packages/addon-dev/src/rollup.ts
index 70661b3b7..6e8a39d3c 100644
--- a/packages/addon-dev/src/rollup.ts
+++ b/packages/addon-dev/src/rollup.ts
@@ -18,11 +18,15 @@ export class Addon {
   // Given a list of globs describing modules in your srcDir, this generates
   // corresponding appTree modules that contain reexports, and updates your
   // package.json metadata to list them all.
-  appReexports(patterns: string[]): Plugin {
+  appReexports(
+    patterns: string[],
+    opts: { mapFilename?: (fileName: string) => string } = {}
+  ): Plugin {
     return appReexports({
       from: this.#srcDir,
       to: this.#destDir,
       include: patterns,
+      mapFilename: opts.mapFilename,
     });
   }
 
diff --git a/tests/scenarios/v2-addon-dev-test.ts b/tests/scenarios/v2-addon-dev-test.ts
index 85a05ff30..bd819ad1e 100644
--- a/tests/scenarios/v2-addon-dev-test.ts
+++ b/tests/scenarios/v2-addon-dev-test.ts
@@ -51,6 +51,10 @@ appScenarios
           destDir: 'dist',
         });
 
+        const reexportMappings = {
+          'components/demo/namespace-me.js': 'components/demo/namespace/namespace-me.js',
+        };
+
         export default {
           output: addon.output(),
 
@@ -62,7 +66,10 @@ appScenarios
             addon.appReexports([
               'components/demo/index.js',
               'components/demo/out.js',
-            ]),
+              'components/demo/namespace-me.js',
+            ], {
+              mapFilename: (name) => reexportMappings[name] || name,
+            }),
 
             addon.hbs(),
             addon.dependencies(),
@@ -84,6 +91,9 @@ appScenarios
             'out.hbs': `
               <out>{{yield}}</out>
             `,
+            'namespace-me.hbs': `
+              namespaced component
+            `,
             'index.js': `
                 import Component from '@glimmer/component';
                 import { tracked } from '@glimmer/tracking';
@@ -149,6 +159,12 @@ appScenarios
 
               assert.dom('out').containsText('hi');
             });
+
+            test('<Demo::Namespace::NamespaceMe />', async function (assert) {
+              await render(hbs\`<Demo::Namespace::NamespaceMe />\`);
+
+              assert.dom().containsText('namespaced component');
+            });
           });
         `,
       },
@@ -180,6 +196,7 @@ appScenarios
           assert.deepEqual(reExports, {
             './components/demo/index.js': './dist/_app_/components/demo/index.js',
             './components/demo/out.js': './dist/_app_/components/demo/out.js',
+            './components/demo/namespace/namespace-me.js': './dist/_app_/components/demo/namespace/namespace-me.js',
           });
         });