Cognomen Oussein (Oussein 
) , across the world, is a rare surname. The surname Oussein is habitual in Cameroon, where it is a rare surname, and the United States, where it is an extremely rare surname. Also, Oussein is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oussein | Cameroon, United States |