Surname Alonso Gerardo (Alonso Gerardo 
) , globally, is an extremely rare family name. The cognomen Alonso Gerardo is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. Much more frequently, Alonso Gerardo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alonso Gerardo | Costa Rica, Mexico, Chile, Ecuador, Peru |