Family name Pacin (Pacin 
, Пацин 
) , in all the world, is a rare last name. The family name Pacin is habitual in Slovakia, where it is quite a rare surname, Argentina, where it is a rare surname, and Uruguay. Not in comparison with a country's population, it is commonest in Argentina, Russia, and Slovakia. Much less frequently, Pacin is the forename as well as the last name.