Cognomen Gnamba-Yao (Gnamba-Yao 
) , in the entire world, is a rare family name. The surname Gnamba-Yao is characteristic of Sub-Saharan Africa, particularly Ivory Coast, where it is a rare surname. Parts of the name also exists independently as a last name Gnamba, and a last name Yao.
| VARIANT | COUNTRY |
|---|---|
| Gnamba-Yao | Ivory Coast |