Saint Marcellinus
Saint Marcellinus may refer to:
- Pope Marcellinus, bishop of Rome 296–304 and martyr
- Marcellinus and Peter, d. 304
- Marcellinus of Carthage, secretary of state to Honorius and martyr
- Marcellinus of Gaul, feast day April 20
- See Narcissus, Argeus, and Marcellinus for Marcellinus, soldier and martyr, d. 340
- St. Marcellinus Secondary School, Mississauga, Ontario