In the entire world, Mbongo-Ossisso (Mbongo-Ossisso 
) is an extremely rare unknown gender forename. Predominantly, Mbongo-Ossisso is the last name as well as the forename. Parts of the name also exists independently as a last name Mbongo.
| VARIANT | COUNTRY |
|---|---|
| Mbongo-Ossisso | Democratic Republic of the Congo |