Cognomen Castillo Loor (Castillo Loor 
) , all over the world, is a rare family name. The surname Castillo Loor is habitual in Ecuador, where it is quite a rare surname, and Spain, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Castillo Loor | Spain, Ecuador |
Roy, Pablo Anibal, Carlos Cesar, Esteban Alfonso, and Rafael Eduardo