Cognomen Diaz Huanca (Diaz Huanca 
) , globally, is a very rare last name. The surname Diaz Huanca is habitual in Latin America and the Caribbean, particularly Ecuador, where it is a rare surname, Chile, where it is a very rare surname, and Peru, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Diaz Huanca | Chile, Spain, Peru, Ecuador |