Last name Guillermo Erico (Guillermo Erico 
) , around the world, is an extremely rare family name. The surname Guillermo Erico is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Guillermo Erico is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guillermo Erico | Peru, Chile |