Family name Derjagin (Дерягин 
, Derjagin 
) , all around the world, is quite a rare last name. The last name Derjagin is habitual in Russia, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Дерягин | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Derjagin | Germany |