Louis II (Czech: Ludvík, Croatian: Ludovik, Hungarian: Lajos, Slovak: Ľudovít; 1 July 1506 – 29 August 1526) was King of Hungary, Croatia and Bohemia from 1516 to 1526.

At his premature birth in Buda on 1 July 1506, the court doctors kept him alive by slaying animals and wrapping him in their warm carcasses as a primitive incubator. He was the only son of Vladislaus II Jagiellon and his third wife, Anne of Foix-Candale.