Family name Oruño (Oruño 
) , all over the world, is a rare last name. The last name Oruño is characteristic of Bolivia, where it is quite a rare surname, Spain, where it is a very rare surname, and Costa Rica. Measured by absolute frequency, it most frequently occurs in Bolivia, Spain, and Argentina. Very seldom, Oruño is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oruño | Costa Rica, Spain, Bolivia, Argentina, Venezuela |