Family name Tertus (Tertus 
) , in the world, is a very rare surname. The surname Tertus is characteristic of Russia, where it is a very rare surname, the United States, where it is an extremely rare surname, and France. Very seldom, Tertus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tertus | France, Russia, Brazil, United States |