Last name Litviniuk (Литвинюк 
, Litviniuk 
) , all around the world, is quite a common cognomen. The cognomen Litviniuk is habitual in Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Литвинюк | Belarus, Russia, Ukraine, Kazakhstan |
| Litviniuk | Argentina, Russia, Ukraine, Belarus, Spain |