Viczay is a Hungarian surname. Notable people with the name include:
Ádám Viczay, Hungarian nobleman, member of the Baron Viczay de Loós family Beled Viczay (1237–1291), Hungarian nobleman, the first provable member of the Viczay de Loós family Éva Viczay (1602–1651), Hungarian noblewoman, the second wife of Baron Pál Esterházy de Galántha Héder Viczay (1807–1873), Hungarian traveller, amateur archaeologist, collector, Imperial and Royal Privy Councillor János Viczay (1615–1656), Hungarian nobleman, member of the Baron Viczay de Loós family Jób Viczay (1700–1734), Hungarian nobleman, the first member of the Count Viczay de Loós et Hédervár family Mihály Viczay (1757–1831), Hungarian numismatist, amateur archaeologist, collector Tamás Viczay, Hungarian nobleman, Count of Sopron County from 1347 to 1360