John XI

John XI may refer to:


 * Pope John XI, ruled in 931–935
 * John XI Yeshu, Syriac Orthodox Patriarch of Antioch in 1208–1220
 * John XI of Constantinople, Ecumenical Patriarch in 1275–1282
 * Pope John XI of Alexandria, ruled in 1427–1452
 * John XI Helou, Maronite Patriarch of Antioch in 1809–1823