Surname Chinchan (Chinchan 
, ชินจัง , Чинчан 
) , across the world, is a rare last name. The family name Chinchan is characteristic of Latvia, where it is a rare surname, Thailand, where it is a very rare surname, and Nigeria. Measured by absolute frequency, it is the most numerous in Thailand, Nigeria, and India. Likewise, Chinchan is the forename as well as the last name.