Worldwide, Thawichai (ทวีชัย 
, Thawichai , ธะวิชัย ) is quite a common primarily masculine, but very seldom girly first name. The first name Thawichai is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare primarily masculine, but very seldom feminine name. Very seldom, Thawichai is the last name as well as the forename.