Family name Gustavo Antonio (Gustavo Antonio 
) , in the entire world, is a rare last name. The surname Gustavo Antonio is characteristic of Chile, where it is quite a rare surname, Spain, where it is a rare surname, and Venezuela, where it is an extremely rare surname. More frequently, Gustavo Antonio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gustavo Antonio | Paraguay, Peru, Ecuador, Chile, Costa Rica |
Soto, Sanchez, Salazar, Alvarez, Aravena, Aguilar, Caceres, Ramirez, Jimenez, Herrera, Vasquez, Fuentes, Martinez, Sandoval, Castillo, Calderon, Gonzalez, Quintana, Sepulveda, Contreras, Rodriguez, Gutierrez, Miranda, Mendoza, Flores, Valdes, Ruiz, Diaz, Vega, Silva, Solis, Araya, Bravo, Perez, Rojas, Reyes, Hernandez, Gomez, Tapia, Molina, Mendez, Muñoz, Castro, Correa, Romero, Garcia, Torres, Huarte, Lopez, and Fernandez