Constantius

Constantius may refer to:

• Constantius I, Roman emperor 305–306
• Constantius II, Roman emperor 337–361
• Constantius III, Roman co-emperor in 421
• Constantius (consul 327), consul in 327
• Constantius Gallus (c.325–354), member of the Constantinian dynasty and Caesar of the Roman Empire (351–354); consul from 352 to 354

• Saint Constantius of Perugia (died c. 170), one of the patron saints of Perugia, Italy
• Saint Constantius of Aquino
• Saint Constantius (Theban Legion)
• Saints Simplicius, Constantius and Victorinus
• Constantius of Lyon, 5th century priest
• Constantius Africanus, (c. 1020–1085), eleventh-century translator of Greek and Islamic medical texts

See also

• Costanzo (disambiguation), surname
• Constantine (disambiguation)