Cognomen Calbac (Calbac 
) , all around the world, is a very rare surname. The cognomen Calbac is characteristic of France, where it is a very rare surname, and Canada, where it is an extremely rare surname. Very seldom, Calbac is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Calbac | Canada, France |