Djebel-Trozza is a mountain in the Forest of Aala, due east of Al Qayrawan, Tunisia. Djebel Trozza is located at 35ð 33' 51"N and 9ð 35' 35" E.
There is an abandoned Lead/Zinc mine on the mountain.
On the mountain, Roman Empire ruins are identified as the remains of Tarasa in Byzacena, which is a Titular see of the Roman Catholic Church. Gregory J. Studerus, auxiliary bishop of Newark, New Jersey, is the current titular bishop.