Cognomen Riobóo (Riobóo 
) , throughout the world, is a very rare family name. The cognomen Riobóo is characteristic of Spain, where it is a very rare surname, and Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Riobóo | Argentina, Spain |
|
raúl riobóo Argentine politician, AR (b. 1911) |
|
|
breogán riobóo Spanish politician, ES (b. 1986) |
|
| docha riobóo Spanish sculptress (1946), ES (b. 1946) |
|