Surname Oilo (Oilo 
) , in all the world, is a rare last name. The surname Oilo is habitual in Bolivia, where it is a rare surname, Malaysia, and Argentina, where it is a very rare surname. Very seldom, Oilo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oilo | Argentina, Bolivia, Malaysia, China, India |