Cognomen Castillo-Reyes (Castillo-Reyes 
) , around the globe, is a very rare family name. The family name Castillo-Reyes is habitual in Philippines, where it is an extremely rare surname, and the United States. Parts of the name also exists independently as a last name Castillo, and a last name Reyes.
| VARIANT | COUNTRY |
|---|---|
| Castillo-Reyes | United States, Philippines |
| octavio castillo-reyes researcher ORCID ID = 0000-0003-4271-5015 |
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