Family name ราชนิพนธ์ (ราชนิพนธ์ 
, Rachanipon ) , across the world, is an extremely rare cognomen. The family name ราชนิพนธ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ราชนิพนธ์ is the forename as well as the last name.