Cognomen Yezhak (Ежак 
, Yezhak 
) , in all the world, is a rare family name. The last name Yezhak is habitual in Eastern Europe, particularly Ukraine, where it is a rare surname, Russia, and Belarus. Measured by absolute frequency, it is the most numerous in Russia, Ukraine, and Kazakhstan. Much less frequently, Yezhak is the forename as well as the last name.