John I
John I may refer to:
People
Religious figures
- John I
- John Chrysostom, Patriarch of Constantinople
- John I of Antioch
- Pope John I of Alexandria, Coptic Pope from 496 to 505
- Pope John I, Pope from 523 to 526
- John I , Exarch of Ravenna
- John I , Archbishop of Trier from 1190 to 1212
- Pope John Paul I, Pope in 1978
Counts
- John I of Ponthieu
- John I of Dreux
- John I of Avesnes, Count of Hainaut
- John I, Count of Blois
- John I of Brienne, Count of Eu
- John I, Count of Holland
- John I Orsini, Count of Cephalonia
- John I of Nassau-Weilburg
- John I, Count of La Marche
- John Günther I, Count of Schwarzburg-Sondershausen,
- John I, Count Palatine of Zweibrücken
Dukes
- John I of Naples
- John I of Amalfi
- John of Brunswick, Duke of Lüneburg
- John I, Duke of Saxony
- John I, Duke of Brittany
- John I, Duke of Brabant
- John I, Duke of Bavaria
- John I, Duke of Opava-Ratibor
- John I, Duke of Mecklenburg-Stargard
- John I, Duke of Lorraine
- John, Duke of Berry
- John the Fearless, ruler of the Burgundian State from 1404 to 1419
- John I of Münsterberg
- John I, Duke of Bourbon
- John Albert I, Duke of Mecklenburg,
- John, 6th Duke of Braganza, a.k.a. John I, Duke of Braganza
- John Ernest I, Duke of Saxe-Weimar
- Johann Adolf I, Duke of Saxe-Weissenfels
Emperors
- John I Tzimiskes, Byzantine Emperor
- John I of Trebizond
- Yohannes I of Ethiopia
Kings
- John of Abkhazia
- John of England, King of England, Lord of Ireland, Duke of Normandy and Aquitaine and Count of Anjou
- John I of Sweden, king of Sweden
- John of Brienne, king of Jerusalem
- John I of Cyprus
- John of Scotland
- John I of France, king for the five days he lived
- John I of Bohemia
- John I of Castile
- John I of Aragon
- John I of Portugal, King of Portugal and of the Algarve, Lord of Ceuta
- John I Albert of Poland,
- João I of Kongo, ruler of the Kingdom of Kongo between 1470 and 1509
- John, King of Denmark called Hans of Denmark,, King of Denmark, Norway and Sweden
- János Szapolyai, King of Hungary and Slavonia
- John of Saxony
Princes
- John I, Prince of Anhalt-Bernburg
- Hans-Adam I, Prince of Liechtenstein
Others
- John I of Gaeta
- John I Doukas of Thessaly
- John I of Montferrat, Marquis of Montferrat
- John of Islay, Lord of the Isles
- John I of Alençon
- John Frederick I, Elector of Saxony
Biblical
- John 1, the first chapter of the Gospel of John
- First Epistle of John or 1 John