Family name แสงวิรัตน์ (แสงวิรัตน์ 
, Sangwirat , Saengwirat ) , all around the world, is a very rare cognomen. The cognomen แสงวิรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, แสงวิรัตน์ is the forename as well as the last name.