Last name กฤษณรัตน์ (กฤษณรัตน์ 
, Kritsanarat 
) , in the entire world, is a very rare surname. The surname กฤษณรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, กฤษณรัตน์ is the forename as well as the last name.