John I may refer to:
People
Religious figures
- John I (bishop of Jerusalem)
- John Chrysostom (349 – c. 407), Patriarch of Constantinople
- John I of Antioch (died 441)
- Pope John I, Pope from 523 to 526
- John I (exarch) (died 615), Exarch of Ravenna
- John I (archbishop of Trier) (c. 1140-1212), Archbishop of Trier from 1190 to 1212
Counts
- John I of Ponthieu (c. 1147 – 1191)
- John I of Dreux (1215–1249)
- John I of Avesnes (1218–1257), Count of Hainaut
- John I, Count of Blois (died 1280)
- John I of Brienne, Count of Eu (died 1294)
- John I, Count of Holland (1284–1299)
- John I Orsini (1303/4–1317), Count of Cephalonia
- John I of Nassau-Weilburg (1309–1371)
- John I, Count of La Marche (1344–1393)
- John Günther I, Count of Schwarzburg-Sondershausen, (1532–1586)
- John I, Count Palatine of Zweibrücken (1550–1604)
Dukes
- John I of Naples (died c. 719)
- John I of Amalfi (died 1007)
- John of Brunswick, Duke of Lüneburg (c. 1242–1277)
- John I, Duke of Saxony (1249–1285)
- John I, Duke of Brittany (1217–1286)
- John I, Duke of Brabant (1253–1294)
- John I, Duke of Bavaria (1329–1340)
- John I, Duke of Opava-Ratibor (c. 1322 – c. 1380–1382)
- John I, Duke of Mecklenburg-Stargard (1326–1392/93)
- John I, Duke of Lorraine (1346–1390)
- John, Duke of Berry (1340–1416)
- John the Fearless (1371-1419), ruler of the Burgundian State from 1404 to 1419
- John I of Münsterberg (ca. 1380 – 1428)
- John I, Duke of Bourbon (1381–1434)
- John Albert I, Duke of Mecklenburg, (1525–1576)
- John, 6th Duke of Braganza (1543–1583), a.k.a. John I, Duke of Braganza
- John Ernest I, Duke of Saxe-Weimar (1594–1626)
- Johann Adolf I, Duke of Saxe-Weissenfels (1649–1697)
Emperors
- John I Tzimiskes (c. 925 – 976), Byzantine Emperor
- John I of Trebizond (died 1238)
- Yohannes I of Ethiopia (ruled 1667–1692)
Kings
- John of Abkhazia (ruled 878/879–880)
- John of England (1166–1216), King of England, Lord of Ireland, Duke of Normandy and Aquitaine and Count of Anjou
- John I of Sweden (c. 1201 – 1222), king of Sweden
- John of Brienne (c. 1148 – 1237), king of Jerusalem
- John I of Cyprus (1259–1285)
- John of Scotland (c. 1249 – c. 1313)
- John I of France (1316), king for the five days he lived
- John I of Bohemia (1296–1346)
- John I of Castile (1358–1390)
- John I of Aragon (1350–1396)
- John I of Portugal (1357–1433), King of Portugal and of the Algarve, Lord of Ceuta
- John I Albert of Poland, (1459–1501)
- João I of Kongo, ruler of the Kingdom of Kongo between 1470 and 1509
- John, King of Denmark called Hans of Denmark, (1455–1513), King of Denmark, Norway and Sweden
- János Szapolyai (1487–1540), King of Hungary and Slavonia
- John of Saxony (1801–1873)
Princes
- John I, Prince of Anhalt-Bernburg (d. 1291)
- Hans-Adam I, Prince of Liechtenstein (1662–1712)
Others
- John I of Gaeta (died c. 933)
- John I Doukas of Thessaly (1268–1289)
- John I of Montferrat (c. 1275–1305), Marquis of Montferrat
- John of Islay, Lord of the Isles (died 1386)
- John I of Alençon (1385–1415)
- John Frederick I, Elector of Saxony (1503–1554)
Biblical
- John 1, the first chapter of the Gospel of John
- First Epistle of John or 1 John
See also
- Jean I (disambiguation)
- Juan I (disambiguation)
- Johann I (disambiguation)
- John (disambiguation)
- King John (disambiguation)
This disambiguation page lists articles associated with the title John I.If an internal link led you here, you may wish to change the link to point directly to the intended article. Categories: