Surname Dumza (Dumza 
) , all around the world, is a very rare cognomen. The cognomen Dumza is habitual in Sub-Saharan Africa, particularly South Africa, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. More frequently, Dumza is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dumza | Poland, Nigeria, South Africa |