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