Sidi El Hani (or Sidi Al-Hani) (سيدي الهاني) is a town and commune in the Sousse Governorate, Tunisia located at 35.67n, 10.30e.

It gives its name to the largest lake of the governorate, a natural salt lake or salt pan (sabkha) in dry seasons, the Sebkhet de Sidi El Hani which is shared with between one and two other areas depending on precipitation and its maximum extent forms the official boundary with part of a third, Monastir Governorate.

The town is 30 km south-west of the coast, its straightest connection being by Tunisian Railways, with a secondary connection by road, the P12 road which is a principal road to Kairouan from the A1 a few kilometres to the east.

[5][6] The town was known as Quartz August[7] (Street of Augustus) or vicus Augustii (the Village of Augustus) and was active from 30 BC to AD 640.

[8] In Late Antiquity Sidi El Hani was the seat of a Christian Bishopric, and remains a titular bishopric of the Roman Catholic Church.