Cognomen Mbonya (Mbonya 
) , in all the world, is a rare family name. The family name Mbonya is characteristic of Tanzania, where it is a rare surname, South Africa, where it is a very rare surname, and Indonesia. Very seldom, Mbonya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mbonya | Tanzania, Indonesia, South Africa, United States |