The Diocese of Sinnuara (in Latin : Dioecesis Sinnuaritana) is a sede soppressa and titular see of the Roman Catholic Church.
The bishopric is suffragan to the Archdiocese of Carthage.
The diocese was during the Roman Empire centered on a town called Sinnuara, in the Roman province of Africa Proconsularis.
That town is now lost but was in what is today Tunisia.
There are two documented bishops of this diocese: Known bishops of Sinnuara