Family name Olguin Fernandez (Olguin Fernandez 
) , in the world, is a very rare last name. The family name Olguin Fernandez is habitual in Latin America and the Caribbean, particularly Chile, where it is a rare surname, and Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Olguin Fernandez | Chile, Argentina |