Saint Sergius (disambiguation)

Saint Sergius was a 3rd-century Roman soldier venerated as a Christian saint and martyr.

For the Church of Saints Sergius and Bacchus, see Little Hagia Sophia.

Saint Sergius may also refer to:

• Sergius of Cappadocia (died 304), Cappadocian monk and martyr
• Pope Sergius I, pope and saint in the 7th century
• Sergios Niketiates (9th century), Eastern Orthodox saint venerated for his role in the restoration of the veneration of icons
• Sergius of Valaam (10th century), Greek monastic
• Sergius of Radonezh (c. 1320–1392), Russian spiritual leader and monastic reformer