diff --git a/app/Http/Controllers/Api/V1/ApiController.php b/app/Http/Controllers/Api/V1/ApiController.php
index cfe4b82..20ceaaa 100644
--- a/app/Http/Controllers/Api/V1/ApiController.php
+++ b/app/Http/Controllers/Api/V1/ApiController.php
@@ -64,6 +64,7 @@ public function login(Request $request)
             'user' => $loginInfo['user'],
             'tenant' => $loginInfo['tenant'],
             'menus' => $loginInfo['menus'],
+            'roles' => $loginInfo['roles'],
         ]);
     }
 
diff --git a/app/Services/MemberService.php b/app/Services/MemberService.php
index 969b347..41a2b29 100644
--- a/app/Services/MemberService.php
+++ b/app/Services/MemberService.php
@@ -213,6 +213,7 @@ public static function getUserInfoForLogin(int $userId): array
                 'user' => $userInfo,
                 'tenant' => null,
                 'menus' => [],
+                'roles' => [],
             ];
         }
 
@@ -236,14 +237,25 @@ public static function getUserInfoForLogin(int $userId): array
         ];
 
         // 4. 메뉴 권한 체크 (menu:{menu_id}.view 패턴)
-        // 4-1. 기본 Role 권한 (model_has_permissions)
-        $rolePermissions = DB::table('model_has_permissions')
-            ->join('permissions', 'model_has_permissions.permission_id', '=', 'permissions.id')
-            ->where('model_has_permissions.model_type', User::class)
-            ->where('model_has_permissions.model_id', $userId)
-            ->where('model_has_permissions.tenant_id', $tenant->id)
+        // 4-1. 역할 기반 권한 + 직접 권한 조회 (하이브리드)
+        $rolePermissions = DB::table('model_has_roles')
+            ->join('role_has_permissions', 'model_has_roles.role_id', '=', 'role_has_permissions.role_id')
+            ->join('permissions', 'role_has_permissions.permission_id', '=', 'permissions.id')
+            ->where('model_has_roles.model_type', User::class)
+            ->where('model_has_roles.model_id', $userId)
+            ->where('model_has_roles.tenant_id', $tenant->id)
             ->where('permissions.name', 'like', 'menu:%.view')
-            ->pluck('permissions.name')
+            ->select('permissions.name')
+            ->union(
+                DB::table('model_has_permissions')
+                    ->join('permissions', 'model_has_permissions.permission_id', '=', 'permissions.id')
+                    ->where('model_has_permissions.model_type', User::class)
+                    ->where('model_has_permissions.model_id', $userId)
+                    ->where('model_has_permissions.tenant_id', $tenant->id)
+                    ->where('permissions.name', 'like', 'menu:%.view')
+                    ->select('permissions.name')
+            )
+            ->pluck('name')
             ->toArray();
 
         // 4-2. Override 권한 (명시적 허용/차단)
@@ -303,10 +315,21 @@ public static function getUserInfoForLogin(int $userId): array
                 ->toArray();
         }
 
+        // 6. 역할(Role) 정보 조회
+        $roles = DB::table('model_has_roles')
+            ->join('roles', 'model_has_roles.role_id', '=', 'roles.id')
+            ->where('model_has_roles.model_type', User::class)
+            ->where('model_has_roles.model_id', $userId)
+            ->where('model_has_roles.tenant_id', $tenant->id)
+            ->select('roles.id', 'roles.name', 'roles.description')
+            ->get()
+            ->toArray();
+
         return [
             'user' => $userInfo,
             'tenant' => $tenantInfo,
             'menus' => $menus,
+            'roles' => $roles,
         ];
     }
 }
diff --git a/app/Services/RegisterService.php b/app/Services/RegisterService.php
index e69c876..9c21e36 100644
--- a/app/Services/RegisterService.php
+++ b/app/Services/RegisterService.php
@@ -5,6 +5,7 @@
 use App\Helpers\TenantCodeGenerator;
 use App\Models\Commons\Menu;
 use App\Models\Members\User;
+use App\Models\Members\UserTenant;
 use App\Models\Tenants\Tenant;
 use App\Models\Tenants\TenantUserProfile;
 use Illuminate\Support\Facades\DB;
@@ -65,7 +66,7 @@ public static function register(array $params): array
                 ],
             ]);
 
-            // 5. Create TenantUserProfile (tenant-user mapping)
+            // 5. Create TenantUserProfile (tenant-user profile mapping)
             TenantUserProfile::create([
                 'user_id' => $user->id,
                 'tenant_id' => $tenant->id,
@@ -73,6 +74,15 @@ public static function register(array $params): array
                 'is_active' => 1, // 활성화
             ]);
 
+            // 5-1. Create UserTenant (tenant-user access mapping)
+            UserTenant::create([
+                'user_id' => $user->id,
+                'tenant_id' => $tenant->id,
+                'is_default' => 1, // 기본 테넌트로 설정
+                'is_active' => 1, // 활성화
+                'joined_at' => now(), // 가입 시각
+            ]);
+
             // 6. Set tenant context for permissions
             app()->bind('tenant_id', fn () => $tenant->id);
             app(PermissionRegistrar::class)->setPermissionsTeamId($tenant->id);
diff --git a/app/Swagger/v1/AuthApi.php b/app/Swagger/v1/AuthApi.php
index 6e824e3..4ceb783 100644
--- a/app/Swagger/v1/AuthApi.php
+++ b/app/Swagger/v1/AuthApi.php
@@ -77,8 +77,8 @@ public function debugApiKey() {}
      * @OA\Post(
      *     path="/api/v1/login",
      *     tags={"Auth"},
-     *     summary="로그인 (토큰 + 사용자 정보 + 테넌트 + 메뉴)",
-     *     description="로그인 성공 시 인증 토큰과 함께 사용자 정보, 활성 테넌트 정보, 접근 가능한 메뉴 목록을 반환합니다.",
+     *     summary="로그인 (토큰 + 사용자 정보 + 테넌트 + 메뉴 + 역할)",
+     *     description="로그인 성공 시 인증 토큰과 함께 사용자 정보, 활성 테넌트 정보, 접근 가능한 메뉴 목록, 역할 목록을 반환합니다.",
      *     security={{"ApiKeyAuth": {}}},
      *
      *     @OA\RequestBody(
@@ -156,6 +156,19 @@ public function debugApiKey() {}
      *                     @OA\Property(property="is_external", type="boolean", example=false, description="외부 링크 여부"),
      *                     @OA\Property(property="external_url", type="string", nullable=true, example="https://example.com", description="외부 링크 URL")
      *                 )
+     *             ),
+     *             @OA\Property(
+     *                 property="roles",
+     *                 type="array",
+     *                 description="사용자가 가진 역할 목록",
+     *
+     *                 @OA\Items(
+     *                     type="object",
+     *
+     *                     @OA\Property(property="id", type="integer", example=1, description="역할 ID"),
+     *                     @OA\Property(property="name", type="string", example="system_manager", description="역할명"),
+     *                     @OA\Property(property="description", type="string", example="시스템 관리자", description="역할 설명")
+     *                 )
      *             )
      *         )
      *     ),