Around the world, Segundo Alfonso (Segundo Alfonso 
) is a rare masculine given name. The forename Segundo Alfonso is characteristic of Latin America and the Caribbean, particularly Chile, where it is quite a rare male name, Peru, and Ecuador, where it is a very rare male name. Not in comparison with a country's population, this name is the most popular in Peru, Chile, and Spain. Much less frequently, Segundo Alfonso is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Segundo Alfonso | Peru, Colombia, Ecuador, Spain, Chile |
Mori, Sangama, Alvarez, Becerra, Panduro, Ramirez, Delgado, Guevara, Tuanama, Navarro, Vasquez, Fuentes, Monsalve, Alvarado, Gonzalez, Gonzales, Espinoza, Rodriguez, Tapia Tapia, Hernandez, Velasquez, Fernandez, Sanchez, Quiroz, Zapata, Ortega, Mego, Alva, Ruiz, Diaz, Jara, Vigo, Vega, Cueva, Bazan, Perez, Cabanillas, Rojas, Leiva, Lopez, Ojeda, Muñoz, Chavez, Garcia, Torres, Huaman, Vargas, Flores, Reyes, and Cabrera Cabrera