Last name Zainukov (Zainukov 
, Зайнуков 
) , in all the world, is a very rare cognomen. The surname Zainukov is habitual in Eastern Europe, particularly Russia, where it is a very rare surname, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Zainukov | Russia |
| Зайнуков | Russia, Ukraine |