Martin I

Martin I may refer to:


 * Pope Martin I (c. 590/600–655), bishop of Rome 649–655
 * Martin I (bishop of Oviedo) (died 1101)
 * Martin I (archbishop of Gniezno) (died after 1112)
 * Martin I of Aragon (1356–1410)
 * Martin I of Sicily (1374/6–1409)
 * Martin, Count of Ribagorza (r. 1533–1565 and 1573–1581), see County of Ribagorza