diff --git a/packages/flutter/lib/src/cupertino/nav_bar.dart b/packages/flutter/lib/src/cupertino/nav_bar.dart
index 283cc8058c..488c62b2e3 100644
--- a/packages/flutter/lib/src/cupertino/nav_bar.dart
+++ b/packages/flutter/lib/src/cupertino/nav_bar.dart
@@ -20,6 +20,7 @@ import 'icons.dart';
 import 'page_scaffold.dart';
 import 'route.dart';
 import 'search_field.dart';
+import 'sheet.dart';
 import 'theme.dart';
 
 /// Modes that determine how to display the navigation bar's bottom in relation to scroll events.
@@ -212,7 +213,9 @@ bool _isTransitionable(BuildContext context) {
   // Fullscreen dialogs never transitions their nav bar with other push-style
   // pages' nav bars or with other fullscreen dialog pages on the way in or on
   // the way out.
-  return route is PageRoute && !route.fullscreenDialog;
+  return route is PageRoute &&
+      !route.fullscreenDialog &&
+      !CupertinoSheetRoute.hasParentSheet(context);
 }
 
 /// An iOS-styled navigation bar.
@@ -1571,7 +1574,10 @@ class _PersistentNavigationBar extends StatelessWidget {
     final Widget? backChevron = components.backChevron;
     final Widget? backLabel = components.backLabel;
 
-    if (leading == null && backChevron != null && backLabel != null) {
+    if (leading == null &&
+        backChevron != null &&
+        backLabel != null &&
+        !CupertinoSheetRoute.hasParentSheet(context)) {
       leading = CupertinoNavigationBarBackButton._assemble(backChevron, backLabel);
     }
 
@@ -1591,7 +1597,11 @@ class _PersistentNavigationBar extends StatelessWidget {
 
     return SizedBox(
       height: _kNavBarPersistentHeight + MediaQuery.paddingOf(context).top,
-      child: SafeArea(bottom: false, child: paddedToolbar),
+      child: SafeArea(
+        top: !CupertinoSheetRoute.hasParentSheet(context),
+        bottom: false,
+        child: paddedToolbar,
+      ),
     );
   }
 }
diff --git a/packages/flutter/test/cupertino/nav_bar_test.dart b/packages/flutter/test/cupertino/nav_bar_test.dart
index c8fd39155d..676faecc52 100644
--- a/packages/flutter/test/cupertino/nav_bar_test.dart
+++ b/packages/flutter/test/cupertino/nav_bar_test.dart
@@ -461,8 +461,6 @@ void main() {
   testWidgets('Media padding is applied to CupertinoSliverNavigationBar', (
     WidgetTester tester,
   ) async {
-    final ScrollController scrollController = ScrollController();
-    addTearDown(scrollController.dispose);
     final Key leadingKey = GlobalKey();
     final Key middleKey = GlobalKey();
     final Key trailingKey = GlobalKey();
@@ -475,7 +473,6 @@ void main() {
           ),
           child: CupertinoPageScaffold(
             child: CustomScrollView(
-              controller: scrollController,
               slivers: <Widget>[
                 CupertinoSliverNavigationBar(
                   leading: Placeholder(key: leadingKey),
@@ -797,6 +794,57 @@ void main() {
     expect(find.text('Home page'), findsOneWidget);
   });
 
+  testWidgets('Navigation bars in a CupertinoSheetRoute have no back button', (
+    WidgetTester tester,
+  ) async {
+    await tester.pumpWidget(
+      const CupertinoApp(home: CupertinoNavigationBar(middle: Text('Home page'))),
+    );
+
+    expect(find.byType(CupertinoButton), findsNothing);
+
+    tester
+        .state<NavigatorState>(find.byType(Navigator))
+        .push(
+          CupertinoSheetRoute<void>(
+            builder: (BuildContext context) {
+              return const CupertinoPageScaffold(
+                navigationBar: CupertinoNavigationBar(middle: Text('Page 2')),
+                child: Placeholder(),
+              );
+            },
+          ),
+        );
+
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 600));
+
+    // No back button is found.
+    expect(find.byType(CupertinoButton), findsNothing);
+    expect(find.text(String.fromCharCode(CupertinoIcons.back.codePoint)), findsNothing);
+
+    tester
+        .state<NavigatorState>(find.byType(Navigator))
+        .push(
+          CupertinoSheetRoute<void>(
+            builder: (BuildContext context) {
+              return const CupertinoPageScaffold(
+                child: CustomScrollView(
+                  slivers: <Widget>[CupertinoSliverNavigationBar(largeTitle: Text('Page 3'))],
+                ),
+              );
+            },
+          ),
+        );
+
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 600));
+
+    // No back button is found.
+    expect(find.byType(CupertinoButton), findsNothing);
+    expect(find.text(String.fromCharCode(CupertinoIcons.back.codePoint)), findsNothing);
+  });
+
   testWidgets('Long back label turns into "back"', (WidgetTester tester) async {
     await tester.pumpWidget(const CupertinoApp(home: Placeholder()));
 
diff --git a/packages/flutter/test/cupertino/nav_bar_transition_test.dart b/packages/flutter/test/cupertino/nav_bar_transition_test.dart
index 0d1ff01918..48d5e13aa1 100644
--- a/packages/flutter/test/cupertino/nav_bar_transition_test.dart
+++ b/packages/flutter/test/cupertino/nav_bar_transition_test.dart
@@ -343,6 +343,53 @@ void main() {
     expect(() => flying(tester, find.text('Page 2')), throwsAssertionError);
   });
 
+  testWidgets('Navigation bars in a CupertinoSheetRoute have no hero transitions', (
+    WidgetTester tester,
+  ) async {
+    await tester.pumpWidget(
+      CupertinoApp(
+        builder: (BuildContext context, Widget? navigator) {
+          return navigator!;
+        },
+        home: const Placeholder(),
+      ),
+    );
+
+    tester
+        .state<NavigatorState>(find.byType(Navigator))
+        .push(
+          CupertinoSheetRoute<void>(
+            builder:
+                (BuildContext context) =>
+                    scaffoldForNavBar(const CupertinoNavigationBar(middle: Text('Page 1')))!,
+          ),
+        );
+
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 600));
+
+    tester
+        .state<NavigatorState>(find.byType(Navigator))
+        .push(
+          CupertinoSheetRoute<void>(
+            builder:
+                (BuildContext context) =>
+                    scaffoldForNavBar(
+                      const CupertinoSliverNavigationBar(largeTitle: Text('Page 2')),
+                    )!,
+          ),
+        );
+
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 50));
+
+    expect(find.byType(Hero), findsNothing);
+
+    // No Hero transition happened.
+    expect(() => flying(tester, find.text('Page 1')), throwsAssertionError);
+    expect(() => flying(tester, find.text('Page 2')), throwsAssertionError);
+  });
+
   testWidgets('Popping mid-transition is symmetrical', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1');