Cognomen Ойсара (Ойсара 
, Oysara 
) , in the world, is a very rare last name. The cognomen Ойсара is habitual in Central Asia, particularly Kyrgyzstan, where it is a rare surname. More prevalently, Ойсара is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ойсара | Kyrgyzstan, Russia, Kazakhstan, Ukraine, Uzbekistan |
| Oysara | United States |