(*Andomatumum Lingonum*), a fortified town of France, department of Haute-Marne, is situated on a hill, at the foot of which the Marne flows, 18 miles S.S.E. from Chaumont. From its excellent eatery, it is often called the French Sheffield. It trades in cattle, hemp, wine, flour, corn, flax, whetstones, and other articles, and is important in a military point of view, as commanding the passage from the basin of the Saône into that of the Seine. Its cathedral of St Mamée is said to have been founded in 380. The ancient church of St Didier is now converted into a museum. There are also a townhouse, a library of 7000 volumes, some hospitals, a communal college, a mercantile court, and a bishop's palace. Langres was the capital of the ancient Lingones, and contains many Roman remains, the principal of which is an arch erected in honour of the two Gordians, A.D., 240. Pop. (1851) 8646.