Cognomen Castro Portillo (Castro Portillo 
) , worldwide, is a very rare last name. The surname Castro Portillo is habitual in Ecuador, where it is a rare surname, Spain, where it is a very rare surname, and Honduras.
| VARIANT | COUNTRY |
|---|---|
| Castro Portillo | Mexico, Honduras, Spain, Ecuador |
Gladys, Isaac Enrique, and Juan Ignacio