Last name Gelfin (Gelfin 
) , across the world, is a very rare cognomen. The surname Gelfin is habitual in Nicaragua, where it is a very rare surname, France, where it is an extremely rare surname, and the United States. Much less frequently, Gelfin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gelfin | France, Nicaragua, United States |