Last name ชัยยะศาสตร์ (Chaiyasasat 
, ชัยยะศาสตร์ , Chaiyasath ) , all around the world, is a very rare surname. The family name ชัยยะศาสตร์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ชัยยะศาสตร์ is the forename as well as the last name.