In all the world, Pierus (Pierus 
) is an extremely rare masculine given name. Very seldom, Pierus is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Pierus | United States, India, South Africa |
Pierus is also a name for the fictitious and mythical characters: Pierus , the king of Emathia, father of the Pierides, eponym of Pieria.