Family name Fortosa (Fortosa 
) , in all the world, is a very rare last name. The last name Fortosa is habitual in Philippines, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and Mexico. Very seldom, Fortosa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fortosa | Philippines, Mexico, Spain, Brazil, Venezuela |