Surname Guillermo Narciso (Guillermo Narciso 
) , worldwide, is an extremely rare cognomen. The last name Guillermo Narciso is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Guillermo Narciso is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guillermo Narciso | Peru, Ecuador, Chile |