Cognomen Shac (Shac 
, Шац 
) , all around the world, is a rare last name. The last name Shac is characteristic of Kazakhstan, where it is quite a rare surname, North Macedonia, where it is a rare surname, and Ukraine. Not in comparison with a country's population, it is the most numerous in Russia, Kazakhstan, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Shac | North Macedonia, India, New Zealand, United States, South Africa |
| Шац | Kazakhstan, Russia, Israel, Belarus, Ukraine |