Last name Валук (Valuk 
, Валук 
) , in the entire world, is a rare surname. The family name Валук is habitual in Hungary, where it is a very rare surname, Russia, and the United States, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in India, the United States, and Russia. Very seldom, Валук is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Valuk | Germany, Russia, Hungary, United States, India |
| Валук | Russia, Ukraine |