Surname คุณารัตน์ (คุณารัตน์ 
, Kunarat 
, Khunyarat 
) , in all the world, is a rare family name. The cognomen คุณารัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is an extremely rare surname. Likewise, คุณารัตน์ is the forename as well as the last name.