In all the world, Tianchai (เทียนชัย 
, Tianchai 
, เทียรชัย ) is quite a rare principally masculine, but scarcely feminine forename. The given name Tianchai is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare primarily boy's, but very seldom girly name. Much less frequently, Tianchai is the last name as well as the forename.