In the entire world, Валериус (Valerius 
, Валериус 
, Valerious 
) is a rare male forename. The given name Валериус is habitual in Germany, where it is a rare masculine name, Tanzania, and Romania. Not in comparison with a country's population, it is commonest in Germany, Indonesia, and Tanzania. Also, Валериус is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Valerius | Germany, Indonesia, United States, France, Brazil |
| Валериус | Russia, Ukraine, Belarus |
| Valerious | Mexico, India, United States |
Valeri, Valerian, Valerianus, Valerii, Valerij, Valerio, Valeriu, Valeriy, Valerjan, Valery, Valeryj, Valère, Valér, Valéri, Valéry, Waleri, Walerian, Walerij, Waleriusz, Walery, Βαλέριος, Валер, Валера, Валери, Валериан, Валерий, Валерио, Валериу, Валерый, Валерій, فاليري, ვალერი, ვალერიანი, and ヴァレリー
Валериус is also a name for the fictitious and mythical characters: Valerius , the character in The Hour of the Dragon and Valerius , the operatic character in the opera Der Tempel des Janus.