John IV
John IV may refer to:
- Patriarch John IV of Constantinople, Patriarch from 582 to his death in 595
- Pope John IV, Pope from 640 to his death in 642
- John IV, Bishop of Naples (died 835)
- John IV of Naples, Duke from 997 to after 1002
- John IV of Gaeta (died 1012)
- John IV Laskaris (1250–c. 1305), Emperor of Nicaea from 1259 to 1261
- John IV, Duke of Brittany (1295–1345)
- John IV, Duke of Brabant (1403–1427)
- John IV, Duke of Mecklenburg (1370–1422)
- John IV Megas Komnenos (c. 1403–1459), Emperor of Trebizond
- John IV, Duke of Bavaria (1437–1463)
- John IV, Duke of Krnov (c. 1440 – 1483)
- Ivan IV of Russia (Ivan the Terrible, 1530–1584)
- John IV of Portugal (1603–1656), known as John II, Duke of Braganza, before 1640
- John IV of Ethiopia (c. 1831–1889)
- Jan IV of Nassau (1410–1475)
- Jan IV of Oświęcim (1426/1430–1497)
See also
- John 4, the fourth chapter of the Gospel of John
- Ioannes IV (disambiguation)
- Johann IV (disambiguation)
This disambiguation page lists articles associated with the title John IV.
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