Cognomen Oueno (Oueno 
) , throughout the world, is a rare surname. The surname Oueno is habitual in the Democratic Republic of the Congo, where it is a rare surname, France, where it is an extremely rare surname, and Philippines. Much less frequently, Oueno is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oueno | Nigeria, France, Democratic Republic of the Congo, Philippines |