Surname Hadum (Hadum 
) , across the world, is a very rare last name. The cognomen Hadum is habitual in South Africa, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and the United States. More frequently, Hadum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hadum | South Africa, Philippines, United States, India, Nigeria |