Cognomen Castillito (Castillito 
) , in all the world, is a very rare family name. The surname Castillito is characteristic of Colombia, where it is a very rare surname, Spain, where it is an extremely rare surname, and Mexico. Very seldom, Castillito is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Castillito | Spain, Mexico, Colombia, Peru, Venezuela |