Cognomen Ponamarchuk (Ponamarchuk 
) , across the world, is a very rare family name. The last name Ponamarchuk is characteristic of Eastern Europe, particularly Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Russia, Belarus, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Ponamarchuk | Russia, United States, Ukraine, Belarus |