Arsenius

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 ( – 445), also known as Arsenius the Deacon, Arsenius of Scetis and Turah, and Arsenius the Roman
• Saint Arsenius of Corfu, first bishop of Corfu, (died ) one of the principal patron saints of Corfu
• Patriarch Arsenius of Alexandria, patriarch of Alexandria from 1000 to 1010
• Saint Arsenius of Latros, (), feast day December 13
• Saint Arsenije Sremac (died 1266), archbishop of Serbia
• Arsenius Autoreianos (died 1273), patriarch of Constantinople
• Saint Arsenius of Tver (died 1409), bishop of Tver, feast day March 2
• Saint Arsenius of Konevits (died 1447), founder of Konevits Monastery, feast day June 12
• Arsenije II, patriarch of Serbia 1457–1463
• Arsenius Apostolius ( – 1538), Greek scholar and Bishop of Monemvasia
• Gualterus Arsenius (), instrument maker
• Saint Arsenius of Suzdal (died 1627), archbishop of Suzdal, feast day April 29
• Arsenije III Crnojević (1633–1706), patriarch of Serbia
• Arsenije IV Jovanović Šakabenta (1698–1748), patriarch of Serbia
• Arsenius Walsh (1804–1869), Irish Catholic missionary in Hawaii
• Saint Arsenius of Paros (1800–1877), feast day January 31
• Saint Arsenios the Cappadocian (1840–1924), god father and spiritual father of Saint Paisios of Mount Athos
• Arsenius Stadnitsky (1862–1936), Archbishop and then Metropolitan of Novgorod from 1910 to 1933
• Arsenios the Cave Dweller (1886–1983), Greek Orthodox monk and elder at Mount Athos
• Arsenius Heikkinen (born 1957), Bishop of Joensuu of the Orthodox Church of Finland
• Arsenios Kardamakis (born 1973), Greek Orthodox Metropolitan of Austria