Surname ชัยนิตย์ (ชัยนิตย์ 
, Chaiyanit , Chaihanit ) , across the world, is a rare cognomen. The surname ชัยนิตย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, ชัยนิตย์ is the forename as well as the last name.