Baron Zsigmond Forgách de Ghymes et Gács, sometimes Sigismund Forgách (Slovak: Žigmund Forgáč; 1559 – 23 June 1621, in Nagyszombat, today Trnava in Slovakia) was a Hungarian nobleman in the Kingdom of Hungary, who served as Palatine from 11 May 1618 to 23 June 1621.