Cognomen Hamaun (Hamaun 
) , worldwide, is a very rare family name. The cognomen Hamaun is habitual in Pakistan, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. More frequently, Hamaun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hamaun | Saudi Arabia, Bangladesh, India, United States, Pakistan |