Ladislaus I
# Ladislaus I

Ladislaus I (also spelled Vladislav I or Władysław I) may refer to:

* Ladislaus I of Hungary (1040–1095), King of Hungary
* Ladislaus I Herman (1040–1102), Duke of Poland
* Władysław II the Exile (1105–1159), Duke of Silesia, sometimes known as Ladislaus I the Exile
* Vladislaus II, Duke of Bohemia (c. 1110-1174), who reigned as King Vladislaus I of Bohemia
* Vladislav I of Serbia, King of Serbia (1234-1243)
* Ladislaus I of Opole (1246–1281), Duke of Opole
* Wladislaus I of Oswiecim (c. 1314 – c. 1321), Duke of Oświęcim
* Władysław I the Elbow-high (1261–1333), King of Poland (also known as Ladislaus the Short, or Władysław I Łokietek)
* Vladislav I of Wallachia (died 1377), Prince of Wallachia (also known as Vlaicu-Vodă)
* Ladislaus I of Naples (1377–1411), King of Naples
