Family name สิทธิภัณฑ์ (สิทธิภัณฑ์ 
) , around the world, is an extremely rare surname. The surname สิทธิภัณฑ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, สิทธิภัณฑ์ is the forename as well as the last name.