Cognomen Voinoff (Voinoff 
) , throughout the world, is an extremely rare last name. The last name Voinoff is habitual in Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Voinoff | United States |
| sam voinoff American football and golf coach (1907–1989), BG (b. 1907) |
|