Surname Mario Estanislao (Mario Estanislao 
) , around the world, is an extremely rare family name. The family name Mario Estanislao is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Mario Estanislao is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mario Estanislao | Argentina, Peru, Ecuador, Chile, Costa Rica |