Surname Cyva (Cyva 
, Цыва 
) , all over the world, is a very rare family name. The last name Cyva is habitual in Belarus, where it is a rare surname, Kazakhstan, and Russia, where it is an extremely rare surname. More frequently, Cyva is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cyva | United States, Brazil, Venezuela, Democratic Republic of the Congo |
| Цыва | Belarus, Russia, Kazakhstan |