Cognomen กรวิรัตน์ (กรวิรัตน์ 
, Konwirat, Kronwirat ) , in all the world, is a rare family name. The family name กรวิรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, กรวิรัตน์ is the forename as well as the last name.