Family name คณาฤทธิ์ (คณาฤทธิ์ 
, Kanarit , Khanarit ) , worldwide, is a rare cognomen. The last name คณาฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, คณาฤทธิ์ is the forename as well as the last name.