BAR-SUR-AUBE, a town of France, capital of an ar rondissement, department of Aube, 34m. E. by S. of Troyes on the railway between that town and Belfort. Pop. (1931), 4,123. Bar-sur-Aube lies at the foot of hills on the right bank of the Aube at its confluence with the Bresse. Traces of a Roman settlement have been found to the south of the town. Under the counts of Champagne it had important fairs which did not cease till 1648. During the Napoleonic wars several actions took place here. Boulevards occupy the site of the old ramparts. The churches of St. Pierre and St. Maclou both date mainly from the end of the r 2th century—St. Pierre has wooden exterior galleries and two fine Gothic porches. The wine of the district is of some repute, and there is an annual wool fair. The town is the seat of a sub-prefect and has a tribunal of first instance.