Last name Gaston Alejandro (Gaston Alejandro 
) , across the world, is a rare family name. The cognomen Gaston Alejandro is characteristic of Chile, where it is quite a rare surname, and Spain, where it is a very rare surname. More frequently, Gaston Alejandro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaston Alejandro | Argentina, Spain, Chile, Afghanistan, Ecuador |