Cognomen Alejandro Roberto (Alejandro Roberto 
) , in all the world, is a rare last name. The surname Alejandro Roberto is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname. More prevalently, Alejandro Roberto is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alejandro Roberto | Peru, Argentina, Chile, Mexico, Ecuador |
Meza, Ortega, Quispe, Morales, Sanchez, Alvarez, Aravena, Ramirez, Gongora, Herrera, Martinez, Cardenas, Castillo, Gonzalez, Espinoza, Valverde, Figueroa, Maldonado, Arancibia, Rodriguez, Fernandez, Hormazabal, Flores, Guerra, Romero, Chavez, Sosa, Diaz, Vila, Vera, Marin, Silva, Solis, Araya, Arias, Bolia, Quispe Castro, Bravo, Palma, Perez, Peña, Raele, Rojas, Reyes, Villa, Vidal, Muñoz, Avalos, Parra, and Sobarzo Moraga