District in the Black Forest in southwestern Germany, on the upper Danube and on one of its two principal headstreams, the River Brege. The area today is part of the Schwarzwald-Baar Kreis, whose capital is Villengen-Schwenningen, in the Land of Baden-Württemberg.
Much of it was held by the Dukes of Zähringen, before passing to the Counts of Urach in 1218. Their lands were partitioned in 1248, Baar going to the Fürstenberg branch of the Urach family. In 1283 the head of that branch became Landgrave of Baar, and in 1318 the Landgrave rounded off his territories in Baar by acquiring Wartenberg. In 1806 Baar became part of Baden, though the Princes of Fürstenberg continue as substantial property holders there to this day.