Civitas Tungrorum

The Civitas Tungrorum was a large Roman administrative district dominating what is now eastern Belgium and the southern Netherlands. In the early days of the Roman Empire it was in the province of Gallia Belgica, but it later joined the neighbouring lower Rhine River border districts, within the province of Germania Inferior. Its capital was Aduatuca Tungrorum, now Tongeren.

Like many other Roman administrative districts, it was named after the tribal grouping that lived there, the Tungri, although that name is not known from the area before it became part of the Roman Empire. Also like other such districts, it became the basis for a medieval bishopric, but the bishops of Tongeren moved first to nearby Maastricht and then to Liège.