title: Jan II
text: # Jan II
  
  Jan II may refer to:
  
  * Jan II of Oświęcim (c. 1344/51 – 1376)
  * John II, Duke of Opava-Ratibor (after 1365 – 1424)
  * Jan II the Mad (1435–1504)
  * Jan II the Good (c. 1460 – 1532)
  * Jan II Kazimierz Vasa (1609–1672), King of Poland
  