Milevum (in Latin even "Milev" or "Mireon"; Μιραίον in Ancient Greek) was a Roman–Berber city in the Roman province of Numidia.

During the Roman era, it was called Colonia Sarnensis Milevitana, after the River Sarnus in Campania (southern Italy), whence the colonists had emigrated.

This confederation area was fully romanised in the fourth century (when was renamed as "Numidia Cirtense"), with nearly all the population speaking local Latin, according to historian Theodor Mommsen.

In the 6th century, the Byzantine Emperor Justinian had Milevum enclosed by a fortified wall, which still stands and forms a rampart for the Muslim city of Mila.

After 682 AD the city may have been conquered by the Umayyad Arabs commanded by Abu al-Muhajir Dinar and since then Milevum disappeared from History.