Limisa (today Aïn-Lemsa) is a town and archaeological site in Kairouan Governorate, Tunisia.[1] It is located 50 kilometers west of kairouan. The town was a Roman Catholic diocese.
The street pattern of the village is fairly regular in its layout and terrace fields move down the hill from the town to the nearby wadi Oued Maarouf. The Parc National Djebel Serj is to the north of the town, but the town is best known for the ruins of a Byzantine fort known as Ksar Lemsa. The Cave Mine is nearby.