Saint Lucius is the name of:

• Pope Lucius I (died 254), pope from June 25, 253 to March 4, 254
• Lucius (died 259), one of the Martyrs of Carthage under Valerian
• Saint Lucius of Chur, first bishop of Chur (feast on Dec 2)
• Saint Lucius of Cyrene, one of the founders of the Christian Church in Antioch of Syria (feast on May 6)
• Lucius of Britain, semi-legendary king of Britain
• Ptolemaeus and Lucius (died 165), Christian martyrs
• Quintian, Lucius and Julian (died 430), African martyrs
• Saint Nohra (or Nuhra), also known as St. Lucius, a Maronite saint
• Bishop Lucius of Caesarea, one of the Martyrs of Caesarea (also known as Luke and Lucas)