Surname Olavarria Muñoz (Olavarria Muñoz 
) , in the world, is a very rare cognomen. The last name Olavarria Muñoz is characteristic of Chile, where it is a rare surname, and Spain, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Olavarria Muñoz | Chile, Spain |
Cesar, and Pedro Olegario