Cognomen Otto Raul (Otto Raul 
) , throughout the world, is an extremely rare family name. The family name Otto Raul is habitual in Chile, where it is an extremely rare surname, and Spain. More prevalently, Otto Raul is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Otto Raul | Chile, Peru, Mexico, Ecuador, Spain |