Stephen I may refer to:
- Pope Stephen I, Bishop of Rome from 254 to 257
- Stephen I of Antioch, Patriarch of Antioch from 342 to 344
- Stephen I of Iberia (died 627), of the Guaramid Dynasty, presiding prince of Iberia from c. 590 to 627
- Ecumenical Patriarch Stephen I of Constantinople (867–893), Patriarch of Constantinople
- Stephen I, Count of Troyes (died 1020), seventh Count of Meaux
- Stephen I of Hungary (967/969/975 – 1038), Grand Prince of the Hungarians and first King of Hungary
- Stephen I of Croatia (ruled 1030–1058)
- Stephan I, Count of Sponheim (d. ca. 1080)
- Stephen I, Count of Burgundy (1065–1102), Count Palatine of Burgundy, Count of Burgundy and Count of Mâcon and Vienne
- Stephen of England (c. 1096 – 1154) may be referred to as Stephen I
- Stephen I of Sancerre (1133–1190), Count of Sancerre and son of Count Theobald II of Champagne
- Stefan Nemanja (1109–1199), Medieval Serb nobleman, Grand Prince of the medieval Serb state of Rascia
- Stephen I, Duke of Bavaria (1271–1310), duke of Lower Bavaria as co-regent of his older brothers Otto III and Louis III
- Stephen I, Ban of Bosnia (1242–1314), Bosnian Ban
- Stephen I of Moldavia (r. 1394–1399)
- Stephen Báthory of Poland (1533–1586), Hungarian noble Prince of Transylvania, King consort of Poland and Grand Duke consort of Lithuania.
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: