Throughout the world, Fermin Alfonso (Fermin Alfonso 
) is a very rare male first name. The first name Fermin Alfonso is habitual in Chile, where it is a rare boy's name, Peru, where it is a very rare male name, and Spain. Much less frequently, Fermin Alfonso is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Fermin Alfonso | Spain, Mexico, Chile, Ecuador, Peru |