Cognomen Dia-Moussahoua (Dia-Moussahoua 
) , globally, is a rare surname. The surname Dia-Moussahoua 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 Dia, and a last name Moussahoua.
| VARIANT | COUNTRY |
|---|---|
| Dia-Moussahoua | Democratic Republic of the Congo |