Family name ชำนาญวิทย์ (Chamnanwit 
, Chamnanvit , ชำนาญวิทย์) , around the world, is a very rare last name. The cognomen ชำนาญวิทย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, ชำนาญวิทย์ is the forename as well as the last name.