Surname Castro Arana (Castro Arana 
) , all around the world, is a very rare cognomen. The family name Castro Arana is habitual in Latin America and the Caribbean, particularly Ecuador, where it is a rare surname, Peru, where it is an extremely rare surname, and Chile. Not in comparison with a country's population, the name is most common in Ecuador, Peru, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Castro Arana | Peru, Chile, Ecuador, Spain |
Valeria, and Pedro Sixto