Family name สมาส (Samat 
, สมาส ) , all around the world, is a common last name. The family name สมาส is habitual in South-eastern Asia, particularly Malaysia, where it is quite a common surname, Brunei, and Singapore. Measured by absolute frequency, it is commonest in Malaysia, India, and Indonesia. Likewise, สมาส is the forename as well as the last name.