Cognomen ชาญชัยวัฒน์ (ชาญชัยวัฒน์ 
, Chanchaiwat ) , across the world, is a rare family name. The cognomen ชาญชัยวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, ชาญชัยวัฒน์ is the forename as well as the last name.