Arsenius
Arsenius or Arsenios stands for:
- Arsenius the Great (around 354 – around 450), saint and hermit
- Arsenios of Alexandria († 1010), Orthodox Patriarch of Alexandria
- Arsenios Autoreianos († after 1265), Patriarch of Constantinople
- Arsenios Balaban († 1569), Orthodox Bishop of Lwów
- Arsenios of Cappadocia (1840–1924), saint and godfather of Saint Paisios of the Holy Mountain
- Arsenius Butscher (1928–2013), German motorcycle racer
- Arsenios Kardamakis (* 1973), Metropolitan of Austria and Exarch of Hungary