Surname Oisis (Oisis 
) , all over the world, is a very rare last name. The surname Oisis is habitual in Algeria, where it is a rare surname, Nicaragua, where it is a very rare surname, and Honduras. Also, Oisis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oisis | Nicaragua, Algeria, Nigeria, India, Brazil |