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