Family name Хелефов (Хелефов 
, Xelefov 
) , around the globe, is a rare cognomen. The cognomen Хелефов is characteristic of Azerbaijan, where it is quite a rare surname, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Хелефов | Russia |
| Xelefov | Azerbaijan |