Cognomen الير (Alier 
, Eller 
, الير 
) , in all the world, is a common surname. The family name الير is characteristic of Estonia, where it is quite a common surname, Austria, and Germany, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in the United States, Germany, and Brazil. Much less frequently, الير is the forename as well as the last name.