Naissus was an ancient city and former bishopric in Balkanic Dacia, which remains a Latin Catholic titular see.
Naissus, today's Niš in Serbia, was important enough in the Roman province of Dacia Mediterranea to become an episcopal see at an early date and was a suffragan of the Metropolitan see in the Archdiocese of Sardica, in the sway of the Patriarchate of Constantinople.
The city was wrecked by Attila's Huns but rebuilt, as the revival of the bishopric attests.
The names of several of early Suffragan Bishops of Naissus are known:[1][2][3] It is listed by the Catholic Church as a Latin titular see [6] since the diocese was nominally restored in 1933 as Titular bishopric of Naissus (Latin) / Naisso (Curiate Italian) / Naissitan(us) (Latin adjective).
It has had the following incumbents, of the fitting Episcopal (lowest) rank, with a few archiepiscopal exceptions: