Across the world, สิทธิ์ชัย (สิทธิ์ชัย 
, Sitchai ) is a rare dominantly masculine, but seldom female forename. The given name สิทธิ์ชัย is characteristic of South-eastern Asia, particularly Thailand, where it is a rare largely male, but seldom female name. Much less frequently, สิทธิ์ชัย is the last name as well as the forename.