Cognomen Айро (Airo 
, Айро 
) , in all the world, is quite a rare last name. The last name Айро is characteristic of Kenya, where it is quite a rare surname, Finland, and Italy, where it is a rare surname. Not in comparison with a country's population, the name is most common in Kenya, Italy, and Tanzania. Much less frequently, Айро is the forename as well as the last name.