Simmern is a town of roughly 7,600 inhabitants (2013) in Rhineland-Palatinate, Germany, the district seat of the Rhein-Hunsrück-Kreis, and the seat of the Verbandsgemeinde Simmern-Rheinböllen. In the Rhineland-Palatinate state development plan, it is set out as a middle centre.

The Hunsrück is a long, triangular, pronounced upland in Rhineland-Palatinate, Germany. It is bounded by the valleys of the Moselle-Saar (north-to-west), the Nahe (south), and the Rhine (east). It is continued by the Taunus mountains, past the Rhine and by the Eifel past the Moselle. To the south of the Nahe is a lower, hilly country forming the near bulk of the Palatinate region and all of the, smaller, Saarland. Below its north-east corner is Koblenz.