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