Last name Bernal Castillo (Bernal Castillo 
) , in the entire world, is a rare surname. The cognomen Bernal Castillo is habitual in Ecuador, where it is a rare surname, Spain, and Chile. Measured by absolute frequency, it most frequently occurs in Ecuador, Spain, and Colombia.
| VARIANT | COUNTRY |
|---|---|
| Bernal Castillo | Spain, Colombia, Mexico, Ecuador, Chile |