Last name Guillermo Saturnino (Guillermo Saturnino 
) , globally, is an extremely rare family name. The surname Guillermo Saturnino is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Guillermo Saturnino is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guillermo Saturnino | Chile, Argentina, Peru, Ecuador |