Family name Derfner (Derfner 
) , all over the world, is a very rare surname. The family name Derfner is characteristic of Israel, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Derfner | Israel, United States |
|
joel derfner American composer and writer, US (b. 1973) |
|