Surname สิทธิพรชัย (สิทธิพรชัย 
, Sitipornchai ) , around the world, is a very rare family name. The last name สิทธิพรชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, สิทธิพรชัย is the forename as well as the last name.