Family name Нефедъев (Нефедъев 
) , across the world, is an extremely rare cognomen. The family name Нефедъев is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Нефедъев | Russia |
Nefedev, Nefedyev, and Nyefyedyev