Surname Ãb (Ãb 
) , across the world, is quite a rare last name. The cognomen Ãb is habitual in Northern Africa, particularly Libya, where it is quite a rare surname, Morocco, and Algeria. Not in comparison with a country's population, this name is the most popular in Northern Africa, particularly Morocco, Algeria, and Egypt. More prevalently, Ãb is the forename as well as the last name.