Cognomen Mouene-Okaka (Mouene-Okaka 
) , in all the world, is a rare family name. The cognomen Mouene-Okaka 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 Mouene, and a last name Okaka.
| VARIANT | COUNTRY |
|---|---|
| Mouene-Okaka | Democratic Republic of the Congo |