Family name Oscar Jairo (Oscar Jairo 
) , in all the world, is a very rare cognomen. The last name Oscar Jairo is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname, and Colombia. More frequently, Oscar Jairo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oscar Jairo | Colombia, Ecuador, Chile, Peru, Costa Rica |