Cognomen Sumbunu (Sumbunu 
) , around the world, is a rare last name. The surname Sumbunu is habitual in Gambia, where it is quite a common surname, France, where it is an extremely rare surname, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in Gambia, France, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Sumbunu | United Kingdom, United States, France, Gambia |