Surname Dubourg-Toungana (Dubourg-Toungana 
) , worldwide, is a rare family name. The family name Dubourg-Toungana 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 Dubourg.
| VARIANT | COUNTRY |
|---|---|
| Dubourg-Toungana | Democratic Republic of the Congo |