Paschasius is a masculine given name. It may refer to:
Paschasius, villain in the legend of Saint Lucy (late 3rd century) Paschasius of Vienne (fl. 4th century), bishop of Vienne Paschasius (d. 437), advisor of the Vandal king and martyr alongside Arcadius and companions Paschasius of Rome (d. 512), Roman deacon and writer Paschasius (fl. 533), Roman praefectus annonae Paschasius of Dumium (fl. c. 555), Galician monk and translator Paschasius Radbertus (d. 865), Frankish monk and scholar Paschasius (bishop of Nyitra) (fl. 1280–1297), Hungarian prelate