Cognomen Àd (Àd 
) , around the world, is quite a rare family name. The cognomen Àd is characteristic of Northern Africa, particularly Algeria, where it is quite a rare surname, Morocco, and Tunisia, where it is a rare surname. Not in comparison with a country's population, the name is most common in Northern Africa, particularly Algeria, Morocco, and Egypt. Likewise, Àd is the forename as well as the last name.