Surname กาสร (Kason 
, Kasuk 
, กาสร ) , in the world, is quite a rare last name. The family name กาสร is habitual in Estonia, where it is quite a rare surname, Laos, and Hungary, where it is a rare surname. Not in comparison with a country's population, it is commonest in Thailand, Japan, and Laos. Likewise, กาสร is the forename as well as the last name.