Family name Olaya Hernandez (Olaya Hernandez 
) , around the globe, is a very rare surname. The cognomen Olaya Hernandez is habitual in Latin America and the Caribbean, particularly Colombia, where it is a very rare surname, and Chile, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Olaya Hernandez | Chile, Colombia |
Jose, Tito, Jaime, Jesus, Harold, Humberto, Jhony Walter, Jose Antonio, Mary Graciela, Carlos Andres, and Juan Sebastian