Last name Šagun (Шагун 
, Šagun) , all over the world, is a rare family name. The family name Šagun is habitual in Belarus, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Ukraine. Measured by absolute frequency, it is commonest in Eastern Europe, particularly Belarus, Russia, and Ukraine. Very seldom, Šagun is the forename as well as the last name.