Cognomen Leo Oscar (Leo Oscar 
) , all over the world, is an extremely rare last name. The cognomen Leo Oscar is characteristic of Latin America and the Caribbean, particularly Ecuador, where it is a very rare surname. More prevalently, Leo Oscar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leo Oscar | Philippines, Australia, Mexico, Ecuador, Peru |
Machunter, and Guzman Avalos