Cognomen ขวัญฤทัยรัตน์ (ขวัญฤทัยรัตน์ 
) , in the world, is an extremely rare family name. The surname ขวัญฤทัยรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, ขวัญฤทัยรัตน์ is the forename as well as the last name.