Family name กรรมสิทธิ์ (กรรมสิทธิ์ 
) , in the world, is a rare last name. The cognomen กรรมสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, กรรมสิทธิ์ is the forename as well as the last name.