Family name Bouyena-Mpassi (Bouyena-Mpassi 
) , all over the world, is a rare last name. The cognomen Bouyena-Mpassi is habitual in Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare surname. Parts of the name also exists independently as a last name Bouyena, and a last name Mpassi.
| VARIANT | COUNTRY |
|---|---|
| Bouyena-Mpassi | Democratic Republic of the Congo |