Bad Kreuznach is a district in Rhineland-Palatinate, Germany. It is bounded by (from the north and clockwise) the districts of Rhein-Hunsrück, Mainz-Bingen, Alzey-Worms, Donnersbergkreis, Kusel and Birkenfeld.
The region is full of medieval castles, especially along the Nahe River. Best known is the Kyrburg of Kirn, built in the 12th century and sitting in state above the river.
In 1815 the district of Kreuznach was established by the Prussian government. In 1932 it was merged with the district of Meisenheim. The name of the district officially changed from Kreuznach to Bad Kreuznach in 1969.