Surname Terechtchouk (Терещук 
, Terechtchouk 
) , across the world, is quite a common last name. The surname Terechtchouk is characteristic of Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Kazakhstan. In absolute terms, it is commonest in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Терещук | Kyrgyzstan, Kazakhstan, Belarus, Russia, Ukraine |
| Terechtchouk | Canada, United States |