Family name Цвир (Цвир 
) , all over the world, is a very rare surname. The last name Цвир is habitual in Ukraine, where it is a very rare surname, Kazakhstan, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Цвир | Kazakhstan, Ukraine, Russia |
| цвир, сергей анатольевич Russian amateur wrestler, RU (b. 1974) |
|