Jan II
# 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
