Last name Zayen (Zayen 
, Заен 
) , throughout the world, is quite a rare surname. The cognomen Zayen is characteristic of Northern Africa, particularly Tunisia, where it is quite a rare surname, Algeria, where it is a rare surname, and Morocco. In absolute terms, it is the most numerous in Tunisia, Bangladesh, and Algeria. Much less frequently, Zayen is the forename as well as the last name.