The Decapolis (Greek: Δεκάπολις, Dekápolis, 'Ten Cities') was a group of ten Greek Hellenistic cities on the eastern frontier of the Greek and late Roman Empire in the Southern Levant in the first centuries BC and AD. Most of the cities were located to the east of the Jordan Rift Valley, between Judaea, Iturea, Nabataea, and Syria.
The Decapolis was a center of Hellenistic culture in a region which was otherwise populated by Jews, Arab Nabataeans and Arameans. The cities formed a group because of their language, culture, religion, location, and political status, with each functioning as an autonomous city-state dependent on Rome. They are sometimes described as a league of cities, although some scholars believe that they were never formally organized as a political unit.