Cognomen Ousmana (Ousmana 
) , all around the world, is a rare last name. The surname Ousmana is habitual in Cameroon, where it is a rare surname, Chad, and Morocco, where it is a very rare surname. Also, Ousmana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ousmana | Morocco, Spain, Gambia, Chad, Cameroon |