Family name Rios Velasco (Rios Velasco 
) , around the world, is a rare cognomen. The last name Rios Velasco is habitual in Latin America and the Caribbean, particularly Bolivia, where it is a rare surname, Ecuador, and Mexico, where it is a very rare surname. Much less frequently, Rios Velasco is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rios Velasco | Bolivia, Spain, Mexico, Ecuador, Chile |