Surname Rios Melgar (Rios Melgar 
) , all around the world, is a very rare family name. The last name Rios Melgar is habitual in Bolivia, where it is a rare surname, and Spain, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rios Melgar | Spain, Bolivia |
Javier, Jhoann, Alejandro, Christian, and Michael Gabriel