Cognomen Riojano (Riojano 
) , across the world, is a very rare family name. The surname Riojano is habitual in Peru, where it is a rare surname, Spain, where it is a very rare surname, and Mexico, where it is an extremely rare surname. Very seldom, Riojano is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Riojano | Peru, Philippines, Mexico, Spain |