Last name สมคำ (Somkham 
, Somkoum , Somkhum ) , across the world, is a rare family name. The cognomen สมคำ is characteristic of Laos, where it is quite a rare surname, Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, สมคำ is the forename as well as the last name.