Cognomen Sithat (Sithat 
, สิทธัต ) , all around the world, is a very rare family name. The surname Sithat is habitual in Cambodia, where it is a very rare surname, Canada, and Thailand, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in India, the United States, and Cambodia. More frequently, Sithat is the forename as well as the last name.