Marsus is a Roman family name, and the Latinisation of the surnames Marso and Marsi.
Marsus may refer to: People Domitius Marsus, Latin poet of ancient Rome; friend of Virgil and Tibullus Gaius Vibius Marsus, proconsul of the Roman Empire during the first century Marsus (king), Latin name of mythical Germanic king Mers, aka Marso Paulus Marsus (1440–1484), Renaissance humanist and poet known primarily for his commentary on the Fasti of Ovid Petrus Marsus (1442–1512), aka Peter Marso, Renaissance scholar who wrote a commentary on Silius Italicus' epic poem Punica Johannes Harmonius Marsus (–), Renaissance humanist and poet known for his plays
Other uses Marsus municipium, the Latin alias of San Benedetto dei Marsi, a comune and town in the province of L'Aquila in the Abruzzo region of Italy Spectamen marsus, a Pacific sea snail species with a streaked top shell
See also Marsi (disambiguation)