Cognomen Ooscar (Ooscar 
) , all over the world, is an extremely rare surname. The last name Ooscar is habitual in Latin America and the Caribbean, particularly Colombia, where it is a very rare surname, Peru, where it is an extremely rare surname, and Argentina. More frequently, Ooscar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ooscar | Belgium, Mexico, Colombia, Argentina, Peru |