Cognomen ตรีวิชัย (ตรีวิชัย 
, Threewichai ) , throughout the world, is a very rare last name. The cognomen ตรีวิชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ตรีวิชัย is the forename as well as the last name.