Family name Korchan (กช 
, Korchan 
, Корчан 
) , in the entire world, is a rare cognomen. The last name Korchan is habitual in Ukraine, where it is a rare surname, Slovakia, and Kazakhstan. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Ukraine, Russia, and Slovakia. Very seldom, Korchan is the forename as well as the last name.