Bad Salzig is a small town in Rhineland-Palatinate, Germany, on the west bank of the Rhine. It is part of the municipality of Boppard. It is near the city of Koblenz and the Lorelei. It is a spa town, with a spring which dispenses slightly salty water. It is linked to other towns by a railway which runs form the town's railway station.
Bad Salzig is located at the historic Roman Rhine road which went from Mainz to Cologne. A Roman index of places from 215 includes a village called Salissone, but it's uncertain whether Salissone is today's Bad Salzig or not. In 1859 two milestones from the third century were found in the river Rhine, which can be seen in the Rheinischen Landesmuseum at Bonn.