In all the world, Siitichai (สิทธิชัย 
, Siitichai) is a common primarily male, but very seldom girly first name. The first name Siitichai is characteristic of South-eastern Asia, particularly Thailand, where it is quite a common principally male, but scarcely girly name. Much less frequently, Siitichai is the last name as well as the forename.