The Arch of Marcus Aurelius (Latin: Arcus Marci Aurelii) was a Roman triumphal arch in Rome, probably in the region of the Campus Martius, near the modern Piazza Colonna and the Column of Marcus Aurelius.

[2][3] The existence of an arch dedicated to Marcus Aurelius is based on a cycle of twelve reliefs that would have been used to decorate it, eight of which were reused in the Arch of Constantine, three that are preserved in the Palazzo dei Conservatori (Capitoline Museums) and a final one that was destroyed and of which only a fragment remains, currently preserved in Copenhagen.

This arch was quoted in medieval sources and which would have been located at the foot of the Capitoline Hill, at the intersection of the Via Lata and the Clivus Argentarius not far from the church of Santi Luca e Martina, the location where the three reliefs now in the Capitoline Museums had been reused.

[5] The reliefs that would have been part of the Arch of Marcus Aurelius depict the story of the emperor's military victories during the Marcomannic Wars.

The emperor appears in all of them, and always in the company of a character who has been identified as his son-in-law and, for a time, his successor in pectore, Tiberius Claudius Pompeianus.