Saint Marcellinus

Saint Marcellinus may refer to:


 * Pope Marcellinus (died 304), bishop of Rome 296–304 and martyr
 * Marcellinus and Peter (died 304), d. 304
 * Marcellinus of Carthage (died 413), secretary of state to Honorius and martyr
 * Marcellinus of Gaul, feast day April 20
 * See Narcissus, Argeus, and Marcellinus for Marcellinus (died 320), soldier and martyr, d. 340
 * St. Marcellinus Secondary School, Mississauga, Ontario