Surname Olenn (Olenn 
) , in all the world, is a very rare family name. The family name Olenn is characteristic of Estonia, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Olenn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olenn | Estonia, Philippines, United States |