Last name Гильфер (Gilfer 
, Guilfer 
, Гильфер 
) , in all the world, is a rare surname. The family name Гильфер is habitual in Kazakhstan, where it is a rare surname, Kyrgyzstan, where it is a very rare surname, and Georgia. Measured by absolute frequency, it most frequently occurs in Kazakhstan, Russia, and Germany. Likewise, Гильфер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gilfer | Germany, Brazil, Philippines, Peru, Venezuela |
| Guilfer | Brazil, Philippines, Mexico, Peru, Venezuela |
| Гильфер | Kyrgyzstan, Kazakhstan, Russia |