Last name Ivanuk (Ivanuk 
, Иванук ) , in all the world, is a very rare surname. The cognomen Ivanuk is habitual in Russia, where it is a very rare surname, Israel, and France, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Russia, France, and Ukraine. Very seldom, Ivanuk is the forename as well as the last name.