The South Theatre is the larger and better-preserved of Jerash's two Roman theatres, built in the first century AD and capable of seating around 3,000 spectators. Its curved tiers of limestone seating are largely intact, and the stage building behind the orchestra — the scaenae frons — retains several of its original columns.
Climbing to the top tier gives one of the best panoramas of the entire site: the Oval Plaza, the colonnaded street, the Temple of Artemis on its hill, and the hills of Gilead beyond. The theatre is sometimes used for performances during the Jerash Festival of Culture and Arts (held annually in July), which adds a modern layer to what is already an ancient performance space.