Family name Gassongo (Gassongo 
) , all over the world, is quite a rare cognomen. The family name Gassongo is habitual in the Democratic Republic of the Congo, where it is quite a rare surname, and France, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Gassongo | France, Democratic Republic of the Congo |
| benoît gassongo Congolese catholic priest, CG (b. 1912) |
|