Cognomen Juan Delfin (Juan Delfin 
) , in the world, is a rare surname. The cognomen Juan Delfin is habitual in Chile, where it is a rare surname, and Spain, where it is a very rare surname. More frequently, Juan Delfin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Juan Delfin | Chile, Peru, Ecuador, Spain, Costa Rica |