Last name بايس (Bais 
, Bays , Paes ) , around the world, is a widespread family name. The surname بايس is habitual in Brazil, where it is quite a common surname, Portugal, where it is quite a rare surname, and Estonia. In absolute terms, it is commonest in Brazil, India, and the United States. Much less frequently, بايس is the forename as well as the last name.