Cognomen Ferjo (Ferjo 
) , around the world, is a rare last name. The cognomen Ferjo is characteristic of Slovakia, where it is quite a rare surname, Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Ferjo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ferjo | Canada, United States, Slovakia, Spain |
| ján ferjo SK (b. 1924) |
|