Maxentius (c. 283 – 312) was a Roman emperor.

Maxentius may also refer to:

People Saint Maxentius (c. 445 – c. 515), a French saint Maxentius of Aquileia (died 837), a patriarch of Aquileia Joannes Maxentius (6th century), a Byzantine leader of the so-called Scythian monks

Other uses Maxentius (insect), a genus of cricket-like insect in the family Stenopelmatidae

See also Maxentia (disambiguation) Basilica of Maxentius Circus of Maxentius Mausoleum of Maxentius Villa of Maxentius