Saint Sergius (disambiguation)

Saint Sergius was a 3rd-century Roman soldier venerated as a Christian saint and martyr, almost always paired with Saint Bacchus as Saints Sergius and Bacchus.

Saint Sergius may also refer to:

• Sergius of Cappadocia (died 304), Cappadocian monk and martyr
• Saint Sarkis the Warrior (4th century), the Armenian form of Sergius; it is unclear if he should be identified with Saint Sergius
• Pope Sergius I (died 701), pope and saint
• Sergios Niketiates (died 843), 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 (1314–1392), Russian spiritual leader and monastic reformer
• St. Sergius Orthodox Theological Institute in Paris