Arsenius

Arsenius may refer to:

• Arsenius (name)
• Arsenius the Great, Saint Arsenius the Deacon, sometimes known as Arsenius of Scetis and Turah or Arsenius the Roman
• Saint Arsenius of Corfu, first bishop of Corfu, (d. 800 AD or perhaps 959 AD) one of the principal patron saints of Corfu
• Arsenius Autorianus (died 1273), Patriarch of Constantinople
• Arsenius of Orte, 9th-century Italian bishop