Constantius may refer to:

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Roman people

  • Constantius I "Chlorus" (–306), Western Roman emperor from 305 to 306
  • Julius Constantius (died 337), consul in 335, son of Constantius I
  • Constantius Gallus (325–354), caesar from 351 to 354 and consul from 352 to 354, son of Julius Constantius
  • Constantius II (317–361), emperor from 337 to 361, grandon of Constantius I
  • Constantius III, Western Roman emperor in 421
  • Constantius Ducas, Eastern/Byzantine co-emperor from 1060 to 1078

Religious figures

  • Saints Simplicius, Constantius and Victorinus (died c. 159), Christian martyrs
  • Saint Constantius of Perugia (died c. 170), one of the patron saints of Perugia, Italy
  • Saint Constantius (Theban Legion) (c. 3rd century), a member of the legendary Theban Legion
  • Constantius of Lyon (), cleric who wrote the Vita Germani, a hagiography
  • Saint Constantius of Aquino, 6th century bishop of Aquino
  • Saint Constantius of Capri (died 7th or 8th century), Bishop of Capri

Other

  • Constantius Africanus, (1085), translator of Greek and Islamic medical texts

See also

  • Constantine Constantius, a pseudonym of Søren Kierkegaard
  • Constantine (disambiguation)