Bad Urach (German: [baːt ˈuːʁax] ⓘ) is a town in the district of Reutlingen, Baden-Württemberg, Germany.

With the exception of the district Bad Urach, the neighbourhoods form simultaneously villages within the meaning of the Baden-Wuerttemberg Municipal Code.

In the early Stone Age, the Alb was already populated, and several caves in the area show evidence that they provided shelter for the inhabitants.

The castle became a state prison in the late Middle Ages; the poet Philipp Nikodemus Frischlin died while trying to escape over its walls in 1590.

In 1867 a cousin of the king of Württemberg was created Duke of Urach but lived 21 kilometres (13 mi) away at Lichtenstein Castle.

In the early part of the 21st century a geothermal project was started, to develop electricity generation and heating in the town.

Bad Urach possesses a late-medieval marketplace with a city hall and half-timbered houses that date from the 15th and 16th centuries.

The Residenzschloss (Castle Residence), the residential home of the Counts of Württemberg-Urach where Eberhard the Bearded was born, contains rooms that date from the Gothic, Renaissance, and Baroque periods.

The pulpit is decorated with figures of the saints and church fathers and is considered an important piece of German stonemasonry.

The successful drilling for mineral thermal water and its development led in 1983 to the recognition as a spa, which had according to the Statistical Office of Baden-Württemberg[4] for Bad Urach in 2012 the number of 367.344 overnight stays.