Last name Fernández Vega (Fernández Vega 
) , globally, is a very rare family name. The cognomen Fernández Vega is habitual in Spain, where it is a very rare surname, Finland, and Costa Rica. Not in comparison with a country's population, the name is most common in Spain, Colombia, and Finland.
| VARIANT | COUNTRY |
|---|---|
| Fernández Vega | Peru, Colombia, Finland, Spain, Costa Rica |