Surname Efren Ricardo (Efren Ricardo 
) , around the world, is an extremely rare cognomen. The cognomen Efren Ricardo is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Predominantly, Efren Ricardo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Efren Ricardo | Peru, Mexico, Ecuador, Philippines, Costa Rica |
Reyes, Garces Calderon, Sanchez Morales, and Maldonado Alvarado