Hardt (German pronunciation: [haʁt]) is a municipality in the district of Rottweil, in Baden-Württemberg, Germany.

Hardt was first mentioned in 1416 as "Hard", a property in the township of Mariazell and of the House of Falkenstein [de],[2] who governed from Schramberg.

Schramberg was dissolved by the process of German mediatization in 1806 and its territories were awarded to the Kingdom of Württemberg.

[3] The municipality (Gemeinde) of Hardt covers 10.17 square kilometers (3.93 sq mi) of the district of Rottweil, in the German state of Baden-Württemberg.

Elevation above sea level in the municipal area ranges from a high of 834 meters (2,736 ft) Normalnull (NN) at the Hochwald to a low of 597 meters (1,959 ft) NN on the Kirnbach at the border with Schramberg.