Cognomen Gaztea (Gaztea 
, Молодший 
) , in the entire world, is a very rare last name. The last name Gaztea is habitual in Ukraine, where it is a rare surname, Spain, where it is an extremely rare surname, and Russia. Much less frequently, Gaztea is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaztea | Spain |
| Молодший | Ukraine, Russia |