Family name Mantchouk (Манчук 
, Mantchouk 
) , in all the world, is quite a rare last name. The last name Mantchouk is habitual in Belarus, where it is quite a rare surname, Ukraine, and Kazakhstan, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Ukraine, Russia, and Belarus. Also, Mantchouk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Манчук | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Mantchouk | Brazil |