Last name Derolus (Derolus 
) , throughout the world, is a very rare family name. The cognomen Derolus is habitual in the Dominican Republic, where it is a rare surname, the United States, where it is a very rare surname, and Canada, where it is an extremely rare surname. Very seldom, Derolus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Derolus | Brazil, United States, Canada, Dominican Republic |