Surname Oana-Mariana (Oana-Mariana 
) , in all the world, is an extremely rare family name. Much more prevalently, Oana-Mariana is the forename as well as the last name. Parts of the name also exists independently as a first name Oana, and a first name Mariana.
| VARIANT | COUNTRY |
|---|---|
| Oana-Mariana | Denmark |
Stefanoae, and Taraboanta