Aeliae or Æliæ was a Roman-era city in the province of Byzacena.
[1] The town must have been of some importance as it was made a bishopric early after the Council of Nicaea and it was a Catholic diocese throughout antiquity.
Its exact location is tentatively given as ruins near Henchir-Mraba[2][3] southeast of Ouled Chamekh, between lake Sebkhet Cherita and Sebkhet de Sidi El Hani in the central part of what is today Mahdia Governorate, Tunisia.
[4] Aeliae was also the seat of an ancient Christian bishopric.
Since 2019 the title has been held by Ricardo Augusto Rodríguez Álvarez, Auxiliary Bishop of Lima, Peru.