Cognomen Itoumbou (Itoumbou 
) , all over the world, is a rare family name. The cognomen Itoumbou is characteristic of the Democratic Republic of the Congo, where it is a rare surname, France, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Itoumbou | Democratic Republic of the Congo, United States, France |