Surname Boitchouk (Бойчук 
, Boitchouk 
) , in the world, is a common family name. The cognomen Boitchouk is habitual in Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Kazakhstan. In absolute terms, it most frequently occurs in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Бойчук | Ukraine, Kazakhstan, Russia, Belarus, Kyrgyzstan |
| Boitchouk | Canada, United States |