Cognomen Aguilar Castaño (Aguilar Castaño 
) , around the world, is a very rare surname. The cognomen Aguilar Castaño is characteristic of Spain, where it is a very rare surname, and Colombia.
| VARIANT | COUNTRY |
|---|---|
| Aguilar Castaño | Colombia, Spain |
Agustin, Luisa Marina, and Maria Eugenia