Surname Giancarlus (Giancarlus 
) , in the world, is an extremely rare family name. The last name Giancarlus is characteristic of Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname. Also, Giancarlus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giancarlus | Brazil, United States |