Cognomen Benavides Ostaiza (Benavides Ostaiza 
) , in all the world, is a very rare last name. The last name Benavides Ostaiza is characteristic of Latin America and the Caribbean, particularly Ecuador, where it is a very rare surname, and Chile, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Benavides Ostaiza | Ecuador, Chile |