Johann von Jenstein (according to the list of bishops of Meissen: John II of Jenstein, according to the list of bishops of Prague: John VI of Jenstein, sometimes: John of Jenzenstein, John of Genzenstein, Czech: Jan z Jenštejna, * December 27 between 1347 and 1350 in Prague, † June 17, 1400 in Rome) was Bishop of Meissen, Archbishop of Prague and Patriarch of Alexandria. He was also Chancellor of the Bohemian King Wenceslas IV and author of religious writings.