Family name Oltianu (Oltianu 
, Олтяну 
) , worldwide, is a rare cognomen. The last name Oltianu is habitual in Romania, where it is quite a rare surname, Albania, where it is a rare surname, and Ukraine, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Romania, Russia, and Albania. Very seldom, Oltianu is the forename as well as the last name.