Last name กฤษดาธาร (กฤษดาธาร 
, Krissadatarn , Kritsadatarn ) , worldwide, is a very rare cognomen. The surname กฤษดาธาร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, กฤษดาธาร is the forename as well as the last name.