Family name Cuyanguillo Cuyanguillo (Cuyanguillo Cuyanguillo 
) , in all the world, is a very rare cognomen. The last name Cuyanguillo Cuyanguillo is characteristic of Latin America and the Caribbean, particularly Ecuador, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Cuyanguillo Cuyanguillo | Ecuador |