Family name Trytyak (Trytyak 
, Тритяк 
) , throughout the world, is a rare surname. The cognomen Trytyak is habitual in Eastern Europe, particularly Ukraine, where it is quite a rare surname, Czechia, where it is a rare surname, and Belarus, where it is a very rare surname. In absolute terms, this name is the most popular in Eastern Europe, particularly Ukraine, Russia, and Czechia.