Aquae in Numidia is a former Roman city and bishopric and present Latin Catholic titular see in present Algeria.
In Antiquity, the city (situated near modern Henchir-El-Hamman) was important enough in the Roman province of Numidia to become a suffragan bishopric, but later faded.
The diocese was nominally restored in 1933 and has had the following incumbents, both of the lowest (episcopal) and intermediary (archiepiscopal) ranks :