Cognomen Айлен (Ailen 
, Aylen 
, Айлен 
) , throughout the world, is quite a rare family name. The cognomen Айлен is characteristic of Isle of Man, where it is quite a rare surname, Argentina, and Uruguay. Not in comparison with a country's population, this name is the most popular in Argentina, Indonesia, and the United Kingdom. More frequently, Айлен is the forename as well as the last name.