Last name Байя (Baya 
, Baja 
, Bajia 
) , all around the world, is a common cognomen. The last name Байя is habitual in Philippines, where it is quite a common surname, Tunisia, and Albania (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Philippines, India, and Kenya. Likewise, Байя is the forename as well as the last name.