Cognomen Qaz (Gas 
, Qaz 
, Qazz 
) , worldwide, is a common surname. The cognomen Qaz is habitual in Somalia, where it is quite a rare surname, Tunisia, and Algeria. Not in comparison with a country's population, this name is the most popular in Indonesia, France, and Algeria. Likewise, Qaz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gas | Spain, Poland, France, Indonesia, Democratic Republic of the Congo |
| Qaz | Saudi Arabia, Philippines, Myanmar, Poland, Indonesia |
| Qazz | China, Malaysia |