Schwarzwald-Baar (German pronunciation: [ˌʃvaʁtsvaltˈbaːɐ̯]) is a Landkreis (district) in the south of Baden-Württemberg, Germany. Neighboring districts are (from north clockwise) Ortenaukreis , Rottweil, Tuttlingen, Constance, the Swiss Canton of Schaffhausen , and the districts Waldshut, Breisgau-Hochschwarzwald and Emmendingen.

The district was created in 1973, when the districts of Donaueschingen and Villingen were merged.

The district got its name from the two predominant landscapes in the district. The Black Forest (Schwarzwald), and the Baar, the foothills between the Black Forest and the Swabian Jura (Schwäbische Alb). Both the Danube River and the Neckar River have their origins in the Schwarzwald and Baar district.