Aquae Novae in Numidia is a former Roman city and bishopric and presently a Latin Catholic titular see.
Aquae Novae was an ancient city in present Algeria, which was important enough to become a suffragan bishopric in the Roman province of Numidia, but faded.
The diocese was nominally restored in 1933 as a titular bishopric.
It has had the following incumbents, all of the lowest (episcopal) rank :