Family name Gelf (Gelf 
) , all around the world, is a rare last name. The cognomen Gelf is habitual in Austria, where it is a rare surname, Germany, where it is a very rare surname, and Italy. Much less frequently, Gelf is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gelf | Germany, Italy, Austria, Spain, France |
| gelf van der meer Dutch Righteous Among the Nations, NL (b. 1904) |
|