Last name جاس (Jas 
, Gass , جاس 
) , throughout the world, is a common family name. The last name جاس is characteristic of Switzerland, where it is quite a rare surname, Tunisia, and United Arab Emirates. Not in comparison with a country's population, this name is the most popular in the United States, India, and Germany. Likewise, جاس is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jas, Gass | Germany, Indonesia, India, United States, Myanmar |
| جاس | Iraq, Sudan, Yemen |