Cognomen Rivas Borja (Rivas Borja 
) , all around the world, is a very rare last name. The surname Rivas Borja is habitual in Latin America and the Caribbean, particularly Ecuador, where it is a very rare surname, and Peru, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rivas Borja | Peru, Ecuador |
Carlos, Alvaro Jose, and Ronald Ricardo