diff --git a/packages/flutter/lib/src/material/date_picker.dart b/packages/flutter/lib/src/material/date_picker.dart
index 455c97e5f4c..8d85cea443c 100644
--- a/packages/flutter/lib/src/material/date_picker.dart
+++ b/packages/flutter/lib/src/material/date_picker.dart
@@ -1259,6 +1259,7 @@ Future<DateTimeRange?> showDateRangePicker({
     keyboardType: keyboardType,
     switchToInputEntryModeIcon: switchToInputEntryModeIcon,
     switchToCalendarEntryModeIcon: switchToCalendarEntryModeIcon,
+    calendarDelegate: calendarDelegate,
   );
 
   if (textDirection != null) {
diff --git a/packages/flutter/test/material/date_range_picker_test.dart b/packages/flutter/test/material/date_range_picker_test.dart
index 92371173479..1157328c9b6 100644
--- a/packages/flutter/test/material/date_range_picker_test.dart
+++ b/packages/flutter/test/material/date_range_picker_test.dart
@@ -61,6 +61,7 @@ void main() {
     TextDirection textDirection = TextDirection.ltr,
     bool useMaterial3 = false,
     SelectableDayForRangePredicate? selectableDayPredicate,
+    CalendarDelegate<DateTime> calendarDelegate = const GregorianCalendarDelegate(),
   }) async {
     late BuildContext buttonContext;
     await tester.pumpWidget(
@@ -106,6 +107,7 @@ void main() {
       builder: (BuildContext context, Widget? child) {
         return Directionality(textDirection: textDirection, child: child ?? const SizedBox());
       },
+      calendarDelegate: calendarDelegate,
     );
 
     await tester.pumpAndSettle(const Duration(seconds: 1));
@@ -1868,6 +1870,49 @@ void main() {
       expect(dialog.calendarDelegate, isA<TestCalendarDelegate>());
     });
 
+    testWidgets('showDateRangePicker uses gregorian calendar delegate by default', (
+      WidgetTester tester,
+    ) async {
+      await preparePicker(tester, (Future<DateTimeRange?> range) async {
+        final Finder helpText = find.text('Select range');
+        final Finder firstDateHeaderText = find.text('Jan 15');
+        final Finder lastDateHeaderText = find.text('Jan 25, 2016');
+        final Finder saveText = find.text('Save');
+
+        expect(helpText, findsOneWidget);
+        expect(firstDateHeaderText, findsOneWidget);
+        expect(lastDateHeaderText, findsOneWidget);
+        expect(saveText, findsOneWidget);
+
+        final DateRangePickerDialog dialog = tester.widget(find.byType(DateRangePickerDialog));
+        expect(dialog.calendarDelegate, isA<GregorianCalendarDelegate>());
+      }, useMaterial3: true);
+    });
+
+    testWidgets('showDateRangePicker using custom calendar delegate implementation', (
+      WidgetTester tester,
+    ) async {
+      await preparePicker(
+        tester,
+        (Future<DateTimeRange?> range) async {
+          final Finder helpText = find.text('Select range');
+          final Finder firstDateHeaderText = find.text('Jan 15');
+          final Finder lastDateHeaderText = find.text('Jan 25, 2016');
+          final Finder saveText = find.text('Save');
+
+          expect(helpText, findsOneWidget);
+          expect(firstDateHeaderText, findsOneWidget);
+          expect(lastDateHeaderText, findsOneWidget);
+          expect(saveText, findsOneWidget);
+
+          final DateRangePickerDialog dialog = tester.widget(find.byType(DateRangePickerDialog));
+          expect(dialog.calendarDelegate, isA<TestCalendarDelegate>());
+        },
+        useMaterial3: true,
+        calendarDelegate: const TestCalendarDelegate(),
+      );
+    });
+
     testWidgets('Displays calendar based on the calendar delegate', (WidgetTester tester) async {
       Finder getMonthItem() {
         final Finder dayItem = find.descendant(