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