Family name Pivak (Pivak 
, Пивак 
) , in the world, is a rare surname. The last name Pivak is habitual in Slovakia, where it is a rare surname, Estonia, and Ukraine, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Russia, Ukraine, and Slovakia. Also, Pivak is the forename as well as the last name.