Around the globe, Guillermo Andres (Guillermo Andres 
) is quite a common boy's forename. The given name Guillermo Andres is characteristic of Latin America and the Caribbean, particularly Chile, where it is quite a common male name, Costa Rica, where it is quite a rare boy's name, and Uruguay, where it is a rare male name. In absolute terms, the name is most common in Latin America and the Caribbean, particularly Chile, Peru, and Colombia. Very seldom, Guillermo Andres is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Guillermo Andres | Peru, Colombia, Chile, Ecuador, Costa Rica |