diff --git a/lib/domain/github_profile.dart b/lib/domain/github_profile.dart
new file mode 100644
index 00000000..bbd0211e
--- /dev/null
+++ b/lib/domain/github_profile.dart
@@ -0,0 +1,20 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'github_profile.freezed.dart';
+part 'github_profile.g.dart';
+
+@freezed
+abstract class GitHubProfile with _$GitHubProfile {
+  @JsonSerializable(fieldRename: FieldRename.snake)
+  const factory GitHubProfile({
+    @JsonKey(fromJson: _idFromJson) required String id,
+    required String login,
+    required String avatarUrl,
+    required String htmlUrl,
+  }) = _GitHubProfile;
+
+  factory GitHubProfile.fromJson(Map<String, Object?> json) =>
+      _$GitHubProfileFromJson(json);
+}
+
+String _idFromJson(Object? json) => json == null ? '' : json.toString();
diff --git a/lib/feature/github_contributor/github_contributor_screen.dart b/lib/feature/github_contributor/github_contributor_screen.dart
new file mode 100644
index 00000000..970237c2
--- /dev/null
+++ b/lib/feature/github_contributor/github_contributor_screen.dart
@@ -0,0 +1,65 @@
+import 'package:dotto/domain/github_profile.dart';
+import 'package:dotto/feature/github_contributor/github_contributor_viewmodel.dart';
+import 'package:dotto/feature/github_contributor/github_contributor_viewstate.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:url_launcher/url_launcher_string.dart';
+
+final class GitHubContributorScreen extends ConsumerWidget {
+  const GitHubContributorScreen({super.key});
+
+  Widget _githubContributorListRow(GitHubProfile githubProfile) {
+    return ListTile(
+      leading: GestureDetector(
+        child: CircleAvatar(
+          radius: 20,
+          backgroundImage: NetworkImage(githubProfile.avatarUrl),
+          backgroundColor: Colors.grey.shade200,
+        ),
+      ),
+      title: Text(githubProfile.login),
+      onTap: () => launchUrlString(githubProfile.htmlUrl),
+    );
+  }
+
+  Widget _body(
+    AsyncValue<GitHubContributorViewState> viewModelAsync, {
+    required Future<void> Function() onRefresh,
+  }) {
+    switch (viewModelAsync) {
+      case AsyncData(:final value):
+        return RefreshIndicator(
+          onRefresh: onRefresh,
+          child: ListView.separated(
+            itemCount: value.contributors.length,
+            separatorBuilder: (_, _) => const Divider(height: 0),
+            itemBuilder: (_, index) {
+              final contributor = value.contributors[index];
+              return _githubContributorListRow(contributor);
+            },
+          ),
+        );
+      case AsyncError(:final error):
+        return Center(child: Text('エラーが発生しました: $error'));
+      case AsyncLoading():
+        return const Center(child: CircularProgressIndicator());
+    }
+  }
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final viewModelAsync = ref.watch(gitHubContributorViewModelProvider);
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('開発者一覧')),
+      body: _body(
+        viewModelAsync,
+        onRefresh: () async {
+          await ref
+              .read(gitHubContributorViewModelProvider.notifier)
+              .onRefresh();
+        },
+      ),
+    );
+  }
+}
diff --git a/lib/feature/github_contributor/github_contributor_service.dart b/lib/feature/github_contributor/github_contributor_service.dart
new file mode 100644
index 00000000..854c7edf
--- /dev/null
+++ b/lib/feature/github_contributor/github_contributor_service.dart
@@ -0,0 +1,13 @@
+import 'package:dotto/domain/github_profile.dart';
+import 'package:dotto/repository/github_contoributor_repository.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+final class GitHubContributorService {
+  GitHubContributorService(this.ref);
+
+  final Ref ref;
+
+  Future<List<GitHubProfile>> getContributors() async {
+    return ref.read(githubContributionRepositoryProvider).getContributors();
+  }
+}
diff --git a/lib/feature/github_contributor/github_contributor_viewmodel.dart b/lib/feature/github_contributor/github_contributor_viewmodel.dart
new file mode 100644
index 00000000..605db248
--- /dev/null
+++ b/lib/feature/github_contributor/github_contributor_viewmodel.dart
@@ -0,0 +1,24 @@
+import 'package:dotto/feature/github_contributor/github_contributor_service.dart';
+import 'package:dotto/feature/github_contributor/github_contributor_viewstate.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'github_contributor_viewmodel.g.dart';
+
+@riverpod
+final class GitHubContributorViewModel extends _$GitHubContributorViewModel {
+  late final GitHubContributorService _service;
+
+  @override
+  Future<GitHubContributorViewState> build() async {
+    _service = GitHubContributorService(ref);
+    final contributors = await _service.getContributors();
+    return GitHubContributorViewState(contributors: contributors);
+  }
+
+  Future<void> onRefresh() async {
+    state = await AsyncValue.guard(() async {
+      final contributors = await _service.getContributors();
+      return GitHubContributorViewState(contributors: contributors);
+    });
+  }
+}
diff --git a/lib/feature/github_contributor/github_contributor_viewstate.dart b/lib/feature/github_contributor/github_contributor_viewstate.dart
new file mode 100644
index 00000000..cd54aa72
--- /dev/null
+++ b/lib/feature/github_contributor/github_contributor_viewstate.dart
@@ -0,0 +1,11 @@
+import 'package:dotto/domain/github_profile.dart';
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'github_contributor_viewstate.freezed.dart';
+
+@freezed
+abstract class GitHubContributorViewState with _$GitHubContributorViewState {
+  const factory GitHubContributorViewState({
+    required List<GitHubProfile> contributors,
+  }) = _GitHubContributorViewState;
+}
diff --git a/lib/feature/setting/settings.dart b/lib/feature/setting/settings.dart
index 96c79eb9..a45edc88 100644
--- a/lib/feature/setting/settings.dart
+++ b/lib/feature/setting/settings.dart
@@ -6,6 +6,7 @@ import 'package:dotto/domain/user_preference_keys.dart';
 import 'package:dotto/feature/announcement/announcement_screen.dart';
 import 'package:dotto/feature/assignment/setup_hope_continuity_screen.dart';
 import 'package:dotto/feature/debug/debug_screen.dart';
+import 'package:dotto/feature/github_contributor/github_contributor_screen.dart';
 import 'package:dotto/feature/setting/controller/settings_controller.dart';
 import 'package:dotto/feature/setting/repository/settings_repository.dart';
 import 'package:dotto/feature/setting/widget/license.dart';
@@ -209,6 +210,21 @@ final class SettingsScreen extends ConsumerWidget {
                   launchUrlString(config.feedbackFormUrl);
                 },
               ),
+              // Contributors表示
+              SettingsTile.navigation(
+                title: const Text('開発者'),
+                leading: const Icon(Icons.person),
+                onPressed: (_) {
+                  Navigator.of(context).push(
+                    MaterialPageRoute<void>(
+                      builder: (_) => const GitHubContributorScreen(),
+                      settings: const RouteSettings(
+                        name: '/setting/github_contributors',
+                      ),
+                    ),
+                  );
+                },
+              ),
               // アプリの使い方
               SettingsTile.navigation(
                 title: const Text('アプリの使い方'),
diff --git a/lib/repository/github_contoributor_repository.dart b/lib/repository/github_contoributor_repository.dart
new file mode 100644
index 00000000..6f2e2c09
--- /dev/null
+++ b/lib/repository/github_contoributor_repository.dart
@@ -0,0 +1,46 @@
+import 'package:dotto/domain/github_profile.dart';
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+final githubContributionRepositoryProvider =
+    Provider<GitHubContributorRepository>(
+      (ref) => GitHubContributorRepositoryImpl(ref),
+    );
+
+abstract class GitHubContributorRepository {
+  Future<List<GitHubProfile>> getContributors();
+}
+
+final class GitHubContributorRepositoryImpl
+    implements GitHubContributorRepository {
+  GitHubContributorRepositoryImpl(this.ref);
+
+  final Ref ref;
+
+  @override
+  Future<List<GitHubProfile>> getContributors() async {
+    try {
+      final dio = Dio();
+      // GitHub contributors API for this repository
+      const url = 'https://api.github.com/repos/fun-dotto/dotto/contributors';
+
+      final response = await dio.get(url);
+      if (response.statusCode != 200) {
+        throw Exception('Failed to get contributors');
+      }
+
+      final data = response.data;
+      if (data == null || data is! List) {
+        throw Exception('Failed to get contributors');
+      }
+
+      return data
+          .map((e) => GitHubProfile.fromJson(e as Map<String, dynamic>))
+          .toList();
+    } catch (e) {
+      debugPrint(e.toString());
+      rethrow;
+    }
+  }
+}
diff --git a/test/feature/github_contributors/github_contributor_service_test.dart b/test/feature/github_contributors/github_contributor_service_test.dart
new file mode 100644
index 00000000..7cee343e
--- /dev/null
+++ b/test/feature/github_contributors/github_contributor_service_test.dart
@@ -0,0 +1,98 @@
+import 'package:dotto/domain/github_profile.dart';
+import 'package:dotto/feature/github_contributor/github_contributor_service.dart';
+import 'package:dotto/repository/github_contoributor_repository.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/annotations.dart';
+import 'package:mockito/mockito.dart';
+
+import 'github_contributor_service_test.mocks.dart';
+
+/// テスト用の GitHubContributorService Provider
+final GitHubContributorServiceProvider = Provider<GitHubContributorService>(
+  GitHubContributorService.new,
+);
+
+@GenerateMocks([GitHubContributorRepository])
+void main() {
+  final githubContributorRepository = MockGitHubContributorRepository();
+
+  final testGitHubProfiles = [
+    GitHubProfile(
+      id: '1',
+      login: 'GitHubUser1',
+      avatarUrl: 'https://avatars.githubusercontent.com/u/1?v=4',
+      htmlUrl: 'https://github.com/GitHubUser1',
+    ),
+    GitHubProfile(
+      id: '2',
+      login: 'GitHubUser2',
+      avatarUrl: 'https://avatars.githubusercontent.com/u/2?v=4',
+      htmlUrl: 'https://github.com/GitHubUser2',
+    ),
+  ];
+
+  ProviderContainer createContainer() => ProviderContainer(
+    overrides: [
+      githubContributionRepositoryProvider.overrideWithValue(
+        githubContributorRepository,
+      ),
+    ],
+  );
+
+  setUp(() {
+    reset(githubContributorRepository);
+  });
+
+  group('GitHubContributorService 正常系', () {
+    test('getContributors がGitHubプロフィール一覧を正しく取得する', () async {
+      when(
+        githubContributorRepository.getContributors(),
+      ).thenAnswer((_) async => testGitHubProfiles);
+
+      final container = createContainer();
+      final service = container.read(githubContributionRepositoryProvider);
+
+      final result = await service.getContributors();
+
+      expect(result, testGitHubProfiles);
+      expect(result.length, 2);
+      expect(result[0].id, '1');
+      expect(result[0].login, 'GitHubUser1');
+      expect(result[1].id, '2');
+      expect(result[1].login, 'GitHubUser2');
+
+      verify(githubContributorRepository.getContributors()).called(1);
+    });
+
+    test('getContributors が空のリストを正しく取得する', () async {
+      when(
+        githubContributorRepository.getContributors(),
+      ).thenAnswer((_) async => <GitHubProfile>[]);
+
+      final container = createContainer();
+      final service = container.read(GitHubContributorServiceProvider);
+
+      final result = await service.getContributors();
+
+      expect(result, isEmpty);
+
+      verify(githubContributorRepository.getContributors()).called(1);
+    });
+  });
+
+  group('GitHubContributorService 異常系', () {
+    test('getContributors がリポジトリの例外をそのまま伝播する', () async {
+      when(
+        githubContributorRepository.getContributors(),
+      ).thenThrow(Exception('Failed to get contributors'));
+
+      final container = createContainer();
+      final service = container.read(GitHubContributorServiceProvider);
+
+      expect(() => service.getContributors(), throwsA(isA<Exception>()));
+
+      verify(githubContributorRepository.getContributors()).called(1);
+    });
+  });
+}
diff --git a/test/feature/github_contributors/github_contributor_service_test.mocks.dart b/test/feature/github_contributors/github_contributor_service_test.mocks.dart
new file mode 100644
index 00000000..4c76522a
--- /dev/null
+++ b/test/feature/github_contributors/github_contributor_service_test.mocks.dart
@@ -0,0 +1,45 @@
+// Mocks generated by Mockito 5.4.6 from annotations
+// in dotto/test/feature/github_contributors/github_contributor_service_test.dart.
+// Do not manually edit this file.
+
+// ignore_for_file: no_leading_underscores_for_library_prefixes
+import 'dart:async' as _i3;
+
+import 'package:dotto/domain/github_profile.dart' as _i4;
+import 'package:dotto/repository/github_contoributor_repository.dart' as _i2;
+import 'package:mockito/mockito.dart' as _i1;
+
+// ignore_for_file: type=lint
+// ignore_for_file: avoid_redundant_argument_values
+// ignore_for_file: avoid_setters_without_getters
+// ignore_for_file: comment_references
+// ignore_for_file: deprecated_member_use
+// ignore_for_file: deprecated_member_use_from_same_package
+// ignore_for_file: implementation_imports
+// ignore_for_file: invalid_use_of_visible_for_testing_member
+// ignore_for_file: must_be_immutable
+// ignore_for_file: prefer_const_constructors
+// ignore_for_file: unnecessary_parenthesis
+// ignore_for_file: camel_case_types
+// ignore_for_file: subtype_of_sealed_class
+// ignore_for_file: invalid_use_of_internal_member
+
+/// A class which mocks [GitHubContributorRepository].
+///
+/// See the documentation for Mockito's code generation for more information.
+class MockGitHubContributorRepository extends _i1.Mock
+    implements _i2.GitHubContributorRepository {
+  MockGitHubContributorRepository() {
+    _i1.throwOnMissingStub(this);
+  }
+
+  @override
+  _i3.Future<List<_i4.GitHubProfile>> getContributors() =>
+      (super.noSuchMethod(
+            Invocation.method(#getContributors, []),
+            returnValue: _i3.Future<List<_i4.GitHubProfile>>.value(
+              <_i4.GitHubProfile>[],
+            ),
+          )
+          as _i3.Future<List<_i4.GitHubProfile>>);
+}
diff --git a/test/feature/github_contributors/github_contributor_viewmodel_test.dart b/test/feature/github_contributors/github_contributor_viewmodel_test.dart
new file mode 100644
index 00000000..6adba95c
--- /dev/null
+++ b/test/feature/github_contributors/github_contributor_viewmodel_test.dart
@@ -0,0 +1,156 @@
+import 'package:dotto/domain/github_profile.dart';
+import 'package:dotto/feature/github_contributor/github_contributor_viewmodel.dart';
+import 'package:dotto/feature/github_contributor/github_contributor_viewstate.dart';
+import 'package:dotto/repository/github_contoributor_repository.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/annotations.dart';
+import 'package:mockito/mockito.dart';
+
+import 'github_contributor_viewmodel_test.mocks.dart';
+
+abstract interface class Listener<T> {
+  void call(T? previous, T next);
+}
+
+@GenerateMocks([GitHubContributorRepository, Listener])
+void main() {
+  final githubContributorRepository = MockGitHubContributorRepository();
+  final listener = MockListener<AsyncValue<GitHubContributorViewState>>();
+
+  final testGitHubContributors = [
+    GitHubProfile(
+      id: '1',
+      login: 'GitHubUser1',
+      avatarUrl: 'https://avatars.githubusercontent.com/u/1?v=4',
+      htmlUrl: 'https://github.com/GitHubUser1',
+    ),
+    GitHubProfile(
+      id: '2',
+      login: 'GitHubUser2',
+      avatarUrl: 'https://avatars.githubusercontent.com/u/2?v=4',
+      htmlUrl: 'https://github.com/GitHubUser2',
+    ),
+  ];
+
+  ProviderContainer createContainer() => ProviderContainer(
+    overrides: [
+      githubContributionRepositoryProvider.overrideWithValue(
+        githubContributorRepository,
+      ),
+    ],
+  );
+
+  setUp(() {
+    reset(listener);
+    reset(githubContributorRepository);
+  });
+
+  group('GitHubContributorViewModel 正常系', () {
+    setUp(() {
+      when(githubContributorRepository.getContributors()).thenAnswer((_) async {
+        await Future<void>.delayed(const Duration(milliseconds: 1));
+        return testGitHubContributors;
+      });
+    });
+
+    test('初期状態が正しく設定される', () async {
+      final container = createContainer()
+        ..listen(
+          gitHubContributorViewModelProvider,
+          listener.call,
+          fireImmediately: true,
+        );
+
+      await expectLater(
+        container.read(gitHubContributorViewModelProvider.notifier).future,
+        completion(
+          isA<GitHubContributorViewState>().having(
+            (p0) => p0.contributors,
+            'contributors',
+            testGitHubContributors,
+          ),
+        ),
+      );
+    });
+
+    test('GitHubProfileが正しく取得される', () async {
+      final container = createContainer()
+        ..listen(
+          gitHubContributorViewModelProvider,
+          listener.call,
+          fireImmediately: true,
+        );
+
+      // 初期状態を待つ
+      final initialState = await container
+          .read(gitHubContributorViewModelProvider.notifier)
+          .future;
+
+      expect(initialState.contributors, testGitHubContributors);
+      expect(initialState.contributors.length, 2);
+      expect(initialState.contributors[0].id, '1');
+      expect(initialState.contributors[0].login, 'GitHubUser1');
+      expect(initialState.contributors[1].id, '2');
+      expect(initialState.contributors[1].login, 'GitHubUser2');
+
+      // listener が呼ばれたことを確認
+      verify(listener.call(any, any)).called(greaterThan(0));
+    });
+
+    test('GitHubProfileが空の場合でも正しく動作する', () async {
+      when(githubContributorRepository.getContributors()).thenAnswer((_) async {
+        await Future<void>.delayed(const Duration(milliseconds: 1));
+        return <GitHubProfile>[];
+      });
+
+      final container = createContainer()
+        ..listen(
+          gitHubContributorViewModelProvider,
+          listener.call,
+          fireImmediately: true,
+        );
+
+      // 初期状態を待つ
+      final initialState = await container
+          .read(gitHubContributorViewModelProvider.notifier)
+          .future;
+
+      expect(initialState.contributors, isEmpty);
+
+      // listener が呼ばれたことを確認
+      verify(listener.call(any, any)).called(greaterThan(0));
+    });
+  });
+
+  group('GitHubContributorViewModel 異常系', () {
+    setUp(() {
+      when(githubContributorRepository.getContributors()).thenAnswer((_) async {
+        throw Exception('Failed to get contributors');
+      });
+    });
+
+    test('GitHubProfileの取得に失敗した場合にエラーがthrowされる', () async {
+      final container = createContainer()
+        ..listen(
+          gitHubContributorViewModelProvider,
+          listener.call,
+          fireImmediately: true,
+        );
+
+      // AsyncValue がエラー状態になるまで待つ
+      var asyncValue = container.read(gitHubContributorViewModelProvider);
+      var attempts = 0;
+      while (!asyncValue.hasError && attempts < 100) {
+        await Future<void>.delayed(const Duration(milliseconds: 10));
+        asyncValue = container.read(gitHubContributorViewModelProvider);
+        attempts++;
+      }
+
+      // AsyncValue が AsyncError であることを確認
+      expect(asyncValue.hasError, isTrue);
+      expect(asyncValue.error, isA<Exception>());
+      expect(() => asyncValue.requireValue, throwsA(isA<Exception>()));
+    });
+  });
+}
diff --git a/test/feature/github_contributors/github_contributor_viewmodel_test.mocks.dart b/test/feature/github_contributors/github_contributor_viewmodel_test.mocks.dart
new file mode 100644
index 00000000..bd9759b8
--- /dev/null
+++ b/test/feature/github_contributors/github_contributor_viewmodel_test.mocks.dart
@@ -0,0 +1,62 @@
+// Mocks generated by Mockito 5.4.6 from annotations
+// in dotto/test/feature/github_contributors/github_contributor_viewmodel_test.dart.
+// Do not manually edit this file.
+
+// ignore_for_file: no_leading_underscores_for_library_prefixes
+import 'dart:async' as _i3;
+
+import 'package:dotto/domain/github_profile.dart' as _i4;
+import 'package:dotto/repository/github_contoributor_repository.dart' as _i2;
+import 'package:mockito/mockito.dart' as _i1;
+
+import 'github_contributor_viewmodel_test.dart' as _i5;
+
+// ignore_for_file: type=lint
+// ignore_for_file: avoid_redundant_argument_values
+// ignore_for_file: avoid_setters_without_getters
+// ignore_for_file: comment_references
+// ignore_for_file: deprecated_member_use
+// ignore_for_file: deprecated_member_use_from_same_package
+// ignore_for_file: implementation_imports
+// ignore_for_file: invalid_use_of_visible_for_testing_member
+// ignore_for_file: must_be_immutable
+// ignore_for_file: prefer_const_constructors
+// ignore_for_file: unnecessary_parenthesis
+// ignore_for_file: camel_case_types
+// ignore_for_file: subtype_of_sealed_class
+// ignore_for_file: invalid_use_of_internal_member
+
+/// A class which mocks [GitHubContributorRepository].
+///
+/// See the documentation for Mockito's code generation for more information.
+class MockGitHubContributorRepository extends _i1.Mock
+    implements _i2.GitHubContributorRepository {
+  MockGitHubContributorRepository() {
+    _i1.throwOnMissingStub(this);
+  }
+
+  @override
+  _i3.Future<List<_i4.GitHubProfile>> getContributors() =>
+      (super.noSuchMethod(
+            Invocation.method(#getContributors, []),
+            returnValue: _i3.Future<List<_i4.GitHubProfile>>.value(
+              <_i4.GitHubProfile>[],
+            ),
+          )
+          as _i3.Future<List<_i4.GitHubProfile>>);
+}
+
+/// A class which mocks [Listener].
+///
+/// See the documentation for Mockito's code generation for more information.
+class MockListener<T> extends _i1.Mock implements _i5.Listener<T> {
+  MockListener() {
+    _i1.throwOnMissingStub(this);
+  }
+
+  @override
+  void call(T? previous, T? next) => super.noSuchMethod(
+    Invocation.method(#call, [previous, next]),
+    returnValueForMissingStub: null,
+  );
+}