Cognomen กีรติรัตน์ (กีรติรัตน์ 
, Kiratirat , Keratirat) , all around the world, is a very rare surname. The last name กีรติรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, กีรติรัตน์ is the forename as well as the last name.