Oberbillig is a municipality in the Trier-Saarburg district, in Rhineland-Palatinate, Germany.

There is a car ferry across the Moselle that connects Oberbillig in Germany to the city of Wasserbillig in Luxemburg.

During the Middle Ages Oberbillig as well as the neighboring town of Wasserbillig used to be one community, called Billig and belonged to the grand duchy of Luxembourg until the two parts were split after the Vienna Congress.

Oberbillig was handed over to Prussia, while Wasserbillig remained luxembourgish.

A small church building dates from 1864 From 18 July 1946 to 6 June 1947 Oberbillig, in its then municipal boundary, formed part of the Saar Protectorate.