Surname Khamtan (Khamtan 
, คำตัน) , around the globe, is a rare last name. The surname Khamtan is habitual in Laos, where it is quite a rare surname, Thailand, where it is a rare surname, and France, where it is an extremely rare surname. In absolute terms, this name is the most popular in Thailand, Laos, and India. Also, Khamtan is the forename as well as the last name.