diff --git a/packages/material_ui/lib/src/text_form_field.dart b/packages/material_ui/lib/src/text_form_field.dart
index 43139398487..710db7b1d3e 100644
--- a/packages/material_ui/lib/src/text_form_field.dart
+++ b/packages/material_ui/lib/src/text_form_field.dart
@@ -182,7 +182,7 @@ class TextFormField extends FormField<String> {
     InputCounterWidgetBuilder? buildCounter,
     ScrollPhysics? scrollPhysics,
     Iterable<String>? autofillHints,
-    AutovalidateMode? autovalidateMode,
+    super.autovalidateMode,
     ScrollController? scrollController,
     super.restorationId,
     bool enableIMEPersonalizedLearning = true,
@@ -228,7 +228,6 @@ class TextFormField extends FormField<String> {
        super(
          initialValue: controller != null ? controller.text : (initialValue ?? ''),
          enabled: enabled ?? decoration?.enabled ?? true,
-         autovalidateMode: autovalidateMode ?? AutovalidateMode.disabled,
          builder: (FormFieldState<String> field) {
            final state = field as _TextFormFieldState;
            InputDecoration effectiveDecoration = (decoration ?? const InputDecoration())
diff --git a/packages/material_ui/lib/src/time_picker.dart b/packages/material_ui/lib/src/time_picker.dart
index ae257120d93..0dd9c5a9398 100644
--- a/packages/material_ui/lib/src/time_picker.dart
+++ b/packages/material_ui/lib/src/time_picker.dart
@@ -2273,6 +2273,7 @@ class _HourMinuteTextFieldState extends State<_HourMinuteTextField> with Restora
               controller: controller.value,
               decoration: inputDecoration,
               validator: widget.validator,
+              autovalidateMode: AutovalidateMode.disabled,
               onEditingComplete: () => widget.onSavedSubmitted(controller.value.text),
               onSaved: widget.onSavedSubmitted,
               onFieldSubmitted: widget.onSavedSubmitted,
diff --git a/packages/material_ui/pending_changelogs/change_2026_08_19_1787142266667.yaml b/packages/material_ui/pending_changelogs/change_2026_08_19_1787142266667.yaml
new file mode 100644
index 00000000000..5ea76a08c94
--- /dev/null
+++ b/packages/material_ui/pending_changelogs/change_2026_08_19_1787142266667.yaml
@@ -0,0 +1,3 @@
+changelog: |
+  - Fixes TextFormField overriding the default autovalidateMode, preventing an ancestor Form's autovalidateMode from taking priority.
+version: patch