Cognomen Oscar Hernan (Oscar Hernan 
) , all around the world, is quite a rare family name. The cognomen Oscar Hernan is characteristic of Chile, where it is quite a rare surname, and Spain, where it is a rare surname. More prevalently, Oscar Hernan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oscar Hernan | Peru, Colombia, Ecuador, Spain, Chile |