Surname Grishan (Grishan 
, Гришан 
) , in the world, is quite a rare last name. The surname Grishan is habitual in Belarus, where it is quite a rare surname, Ukraine, where it is a rare surname, and Kazakhstan. Not in comparison with a country's population, it is the most numerous in Eastern Europe, particularly Belarus, Russia, and Ukraine. Very seldom, Grishan is the forename as well as the last name.