Last name German Guillermo (German Guillermo 
) , across the world, is a rare family name. The cognomen German Guillermo is habitual in Chile, where it is a rare surname, and Spain, where it is a very rare surname. More prevalently, German Guillermo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| German Guillermo | Costa Rica, Spain, Chile, Ecuador, Peru |
Diaz, Castillo, Bugueño, Gonzalez, Labraña, Sepulveda, Contreras, Rodriguez, Gusmeroli, Hernandez, Inostroza, Canipani Salinas, Valenzuela, Santibañez, Guaman Cruz, Johnson Osorio, Millan Maureira, Sanchez Erazo, Sandoval, Vasquez, Gajardo, Pizarro, Manco, Silva, Araya, Bedia, Perez, Pinto, Rojas, Gomez, Jorquera Gonzalez, Tapia, Millan, Acuña, Castro, Campos, Garcia, Vargas, Cordova, Pacheco, Mallea, and Rodriguez Ortiz