Arsenius (Latinized form) and Arsenios (Greek form) is a male first name. It is derived from the Greek word arsenikos (ἀρσενικός), meaning "male", "virile".
It may refer to:
Saint Arsenius the Great (c. 350 – 445), also known as Arsenius the Deacon, Arsenius of Scetis and Turah, and Arsenius the RomanSaint Arsenius of Corfu, first bishop of Corfu, (d. 800 AD or perhaps 959 AD) one of the principal patron saints of CorfuPatriarch Arsenius of Alexandria, Patriarch of Alexandria from 1000 to 1010Arsenius Autorianus (died 1273), Patriarch of ConstantinopleArsenius Apostolius (c. 1468 – 1538), Greek scholar and Bishop of MonemvasiaGualterus Arsenius (? – c. 1580), instrument makerArsenius Walsh (1804 – 1869), Irish Catholic missionary in HawaiiArsenius Stadnitsky (1862 – 1936), Archbishop and then Metropolitan of Novgorod from 1910 to 1933