Family name تريس (Tris 
, Tres , Tress ) , around the globe, is a common last name. The cognomen تريس is habitual in Guatemala, where it is quite a rare surname, Paraguay, and Indonesia. Not in comparison with a country's population, it is commonest in Indonesia, Brazil, and Germany. Likewise, تريس is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tress, Tris, Tres | Germany, Spain, Brazil, United States, Indonesia |
| تريس | Jordan, Libya, Yemen, Sudan, Saudi Arabia |