Cognomen Айлу (Ailu 
, Айлу 
) , throughout the world, is a rare family name. The surname Айлу is habitual in Nigeria, where it is a very rare surname, India, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in India, Nigeria, and China. More frequently, Айлу is the forename as well as the last name.