Cognomen Woronzow (Воронцов 
, Woronzow 
) , all around the world, is a common last name. The family name Woronzow is characteristic of Eastern Europe, particularly Russia, where it is quite a common surname, Belarus, and Ukraine, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Воронцов | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Woronzow | Germany, Canada, Australia |
Voroncov, Vorontsov, Александрович, Алексеевич, Воронзов, and Иванович