Family name Alvarado Barreto (Alvarado Barreto 
) , in all the world, is a very rare cognomen. The cognomen Alvarado Barreto is habitual in Ecuador, where it is a rare surname, and Spain, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Alvarado Barreto | Spain, Ecuador |
Cesar, Rosa Olga, Janeth Eulalia, and Jean Pierre