Cognomen วินัยรักษ์ (Vinairak 
, วินัยรักษ์ , Winairuk ) , globally, is a very rare last name. The surname วินัยรักษ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, วินัยรักษ์ is the forename as well as the last name.