Family name Olenia (Olenia 
) , all over the world, is a rare surname. The surname Olenia is characteristic of the Democratic Republic of the Congo, where it is a rare surname, Poland, and Venezuela, where it is a very rare surname. Also, Olenia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olenia | Brazil, Philippines, Dominican Republic, Democratic Republic of the Congo, Poland |