Aquae Albae in Byzacena was an Ancient city and bishopric in Roman Africa and remains a Latin Catholic titular see.

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (November 2016)

Its present location is Ain-Beida, in modern Tunisia (which has namesakes, notably in Algeria and Morocco).

Aquae Albae was important enough in the Roman province of Byzacena to become one of the many suffragans of its capital Hadrumetum's Metropolitan Archbishop, but was to fade.

The diocese was nominally restored in 1933 as a Latin Catholic titular bishopric.

It has had the following incumbents, all of the lowest (episcopal) rank :

• Aimable Chassaigne (1962.01.23 – 1962.04.06)
• Paul Chevrier (1962.08.21 – 1968.10.04)
• Ramón Ovidio Pérez Morales (1970.12.02 – 1980.05.20) (later Archbishop)
• Anthony Joseph Bevilacqua (1980.10.04 – 1983.10.10) as Auxiliary Bishop of Brooklyn (NYC, USA) (1980.02.11 – 1983.10.10); later Bishop of Pittsburgh (USA) (1983.10.10 – 1988.02.11), Metropolitan Archbishop of Philadelphia (USA) (1988.02.11 – 2003.07.15), created Cardinal-Priest of SS. Redentore e S. Alfonso in Via Merulana (1991.06.28 – 2012.01.31)
• Piotr Krupa (1984.02.18 – 2024.03.04), Auxiliary Bishop emeritus of Pelplin (Poland)

• Aquae Albae in Mauretania
• Aquae in Byzacena
• Catholic Church in Algeria
• Catholic Church in Tunisia