Cognomen ฮายา (Hadya 
, Hasya 
, Hayaa 
) , in the entire world, is quite a common last name. The surname ฮายา is characteristic of Ethiopia, where it is quite a rare surname, Libya, and Egypt, where it is a rare surname. In absolute terms, it is the most numerous in Ethiopia, Indonesia, and Egypt. Also, ฮายา is the forename as well as the last name.