Family name Gahungu (Gahungu 
) , in all the world, is quite a rare surname. The surname Gahungu is habitual in Burundi, where it is quite a common surname, Rwanda, where it is quite a rare surname, and Belgium, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Burundi, Rwanda, and the United States. Much less frequently, Gahungu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gahungu | Canada, United States, Rwanda, Burundi, France |