Ladislaus IV may refer to:
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Ladislaus IV of Hungary
Ladislaus IV (, , ; 5 August 1262 – 10 July 1290), also known as Ladislaus the Cuman, was King of Hungary and Croatia from 1272 to 1290. His mother, Elizabeth, was the daughter of a chieftain from the pagan Cumans who had settled in Hung ...
(1262–1290), a king of Hungary
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Władysław I Łokietek (1260/1-1333), King of Poland who was sometimes numbered IV
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Władysław IV Vasa
Władysław IV Vasa or Ladislaus IV (9 June 1595 – 20 May 1648) was King of Poland, Grand Duke of Lithuania and claimant of the thrones of Monarchy of Sweden, Sweden and List of Russian monarchs, Russia. Born into the House of Vasa as a prince ...
or Ladislaus IV (1595–1648), a king of Poland
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