Władysław III (October 31, 1424 – November 10, 1444), also known as Władysław of Varna, is King of Poland from 1434, and King of Hungary and Croatia from 1440, until his death at the Battle of Varna.

Władysław III of Varna is known in Hungarian as I. Ulászló; in Polish as Władysław Warneńczyk; in Slovak as Vladislav I; in Czech as Vladislav Varnenčík; in Bulgarian as Владислав Варненчик (Vladislav Varnenchik); in Lithuanian as Vladislovas III; in Croatian as Vladislav I. Jagelović.