Cognomen Alainn (Alainn 
) , in all the world, is an extremely rare family name. The surname Alainn is characteristic of Latin America and the Caribbean, particularly Mexico, where it is an extremely rare surname, and Venezuela. More prevalently, Alainn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alainn | Mexico, United States, France, Brazil, Venezuela |