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 |
|---|---|
| Tres, Tris, Tress | Indonesia, United States, Germany, Brazil, Spain |
| تريس | Saudi Arabia, Jordan, Yemen, Sudan, Libya |