Last name กฤษฎาธาร (กฤษฎาธาร 
, Kritsadathan 
) , in all the world, is a very rare cognomen. The surname กฤษฎาธาร is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, กฤษฎาธาร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กฤษฎาธาร | Thailand |
| Kritsadathan | Thailand, United States |