Family name Carollus (Carollus 
) , worldwide, is a very rare surname. The surname Carollus is characteristic of Slovenia, where it is a rare surname, Austria, and South Africa, where it is a very rare surname. Likewise, Carollus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Carollus | France, South Africa, Austria, Slovenia, Indonesia |