diff --git a/packages/flutter/lib/src/cupertino/app.dart b/packages/flutter/lib/src/cupertino/app.dart
index 1595b4c55b..ad89c3aa2e 100644
--- a/packages/flutter/lib/src/cupertino/app.dart
+++ b/packages/flutter/lib/src/cupertino/app.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'button.dart';
diff --git a/packages/flutter/lib/src/cupertino/context_menu.dart b/packages/flutter/lib/src/cupertino/context_menu.dart
index 169ef22289..41cc7cd3f9 100644
--- a/packages/flutter/lib/src/cupertino/context_menu.dart
+++ b/packages/flutter/lib/src/cupertino/context_menu.dart
@@ -6,7 +6,6 @@ import 'dart:math' as math;
 import 'dart:ui' as ui;
 import 'package:flutter/gestures.dart' show kMinFlingVelocity, kLongPressTimeout;
 import 'package:flutter/foundation.dart' show kIsWeb;
-import 'package:flutter/rendering.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
diff --git a/packages/flutter/lib/src/cupertino/context_menu_action.dart b/packages/flutter/lib/src/cupertino/context_menu_action.dart
index f76b173e53..b9c28ab943 100644
--- a/packages/flutter/lib/src/cupertino/context_menu_action.dart
+++ b/packages/flutter/lib/src/cupertino/context_menu_action.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 import 'colors.dart';
 
diff --git a/packages/flutter/lib/src/cupertino/date_picker.dart b/packages/flutter/lib/src/cupertino/date_picker.dart
index 47c458f972..762cc100be 100644
--- a/packages/flutter/lib/src/cupertino/date_picker.dart
+++ b/packages/flutter/lib/src/cupertino/date_picker.dart
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui';
 
 import 'package:flutter/scheduler.dart';
 import 'package:flutter/widgets.dart';
diff --git a/packages/flutter/lib/src/cupertino/debug.dart b/packages/flutter/lib/src/cupertino/debug.dart
index 6706ec72b7..39f2a00a2f 100644
--- a/packages/flutter/lib/src/cupertino/debug.dart
+++ b/packages/flutter/lib/src/cupertino/debug.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 import 'localizations.dart';
diff --git a/packages/flutter/lib/src/cupertino/form_row.dart b/packages/flutter/lib/src/cupertino/form_row.dart
index fa9419486f..1b18340363 100644
--- a/packages/flutter/lib/src/cupertino/form_row.dart
+++ b/packages/flutter/lib/src/cupertino/form_row.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'colors.dart';
diff --git a/packages/flutter/lib/src/cupertino/form_section.dart b/packages/flutter/lib/src/cupertino/form_section.dart
index c6f0fd9dd1..dfcb00edc4 100644
--- a/packages/flutter/lib/src/cupertino/form_section.dart
+++ b/packages/flutter/lib/src/cupertino/form_section.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'colors.dart';
diff --git a/packages/flutter/lib/src/cupertino/route.dart b/packages/flutter/lib/src/cupertino/route.dart
index 5d62acfb5a..ac988d461e 100644
--- a/packages/flutter/lib/src/cupertino/route.dart
+++ b/packages/flutter/lib/src/cupertino/route.dart
@@ -5,7 +5,6 @@
 import 'dart:math';
 import 'dart:ui' show lerpDouble, ImageFilter;
 
-import 'package:flutter/animation.dart' show Curves;
 import 'package:flutter/foundation.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/rendering.dart';
diff --git a/packages/flutter/lib/src/cupertino/scrollbar.dart b/packages/flutter/lib/src/cupertino/scrollbar.dart
index f6c1010dd6..ba07555318 100644
--- a/packages/flutter/lib/src/cupertino/scrollbar.dart
+++ b/packages/flutter/lib/src/cupertino/scrollbar.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/gestures.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 
diff --git a/packages/flutter/lib/src/cupertino/search_field.dart b/packages/flutter/lib/src/cupertino/search_field.dart
index fe2202eb30..febaefe4d2 100644
--- a/packages/flutter/lib/src/cupertino/search_field.dart
+++ b/packages/flutter/lib/src/cupertino/search_field.dart
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/rendering.dart';
-import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 
 import 'button.dart';
diff --git a/packages/flutter/lib/src/cupertino/segmented_control.dart b/packages/flutter/lib/src/cupertino/segmented_control.dart
index ceceebaad3..f3d6e6d7fa 100644
--- a/packages/flutter/lib/src/cupertino/segmented_control.dart
+++ b/packages/flutter/lib/src/cupertino/segmented_control.dart
@@ -5,7 +5,6 @@
 import 'dart:collection';
 import 'dart:math' as math;
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
diff --git a/packages/flutter/lib/src/cupertino/sliding_segmented_control.dart b/packages/flutter/lib/src/cupertino/sliding_segmented_control.dart
index a2b2416c3b..4abb888f90 100644
--- a/packages/flutter/lib/src/cupertino/sliding_segmented_control.dart
+++ b/packages/flutter/lib/src/cupertino/sliding_segmented_control.dart
@@ -4,7 +4,6 @@
 
 import 'dart:math' as math;
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/physics.dart';
 import 'package:flutter/rendering.dart';
diff --git a/packages/flutter/lib/src/cupertino/tab_scaffold.dart b/packages/flutter/lib/src/cupertino/tab_scaffold.dart
index ecadbbdbdc..ab6345e6d9 100644
--- a/packages/flutter/lib/src/cupertino/tab_scaffold.dart
+++ b/packages/flutter/lib/src/cupertino/tab_scaffold.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 import 'bottom_tab_bar.dart';
 import 'colors.dart';
diff --git a/packages/flutter/lib/src/cupertino/text_form_field_row.dart b/packages/flutter/lib/src/cupertino/text_form_field_row.dart
index 74176a8d73..9e58619c99 100644
--- a/packages/flutter/lib/src/cupertino/text_form_field_row.dart
+++ b/packages/flutter/lib/src/cupertino/text_form_field_row.dart
@@ -2,14 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 
 import 'colors.dart';
 import 'form_row.dart';
 import 'text_field.dart';
-import 'theme.dart';
 
 /// Creates a [CupertinoFormRow] containing a [FormField] that wraps
 /// a [CupertinoTextField].
diff --git a/packages/flutter/lib/src/cupertino/text_selection.dart b/packages/flutter/lib/src/cupertino/text_selection.dart
index 86461a3d50..9fd3abe432 100644
--- a/packages/flutter/lib/src/cupertino/text_selection.dart
+++ b/packages/flutter/lib/src/cupertino/text_selection.dart
@@ -8,7 +8,6 @@ import 'dart:ui' as ui;
 
 import 'package:flutter/widgets.dart';
 import 'package:flutter/rendering.dart';
-import 'package:flutter/services.dart';
 
 import 'button.dart';
 import 'colors.dart';