Worldwide, Оиуна (Oyuna 
, Оиуна ) is a very rare principally female, but very seldom boy's first name. The first name Оиуна is habitual in Mongolia, where it is quite a rare girly name, and Russia, where it is an extremely rare feminine name. Much less frequently, Оиуна is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Oyuna | Germany, Russia, United States, India, Mongolia |
| Оиуна | Russia |