Bad Ems-Nassau is a Verbandsgemeinde ("collective municipality") in the Rhein-Lahn-Kreis, in Rhineland-Palatinate, Germany. The seat of the Verbandsgemeinde is in Bad Ems. It was formed on 1. January 2019 by the merger of the former Verbandsgemeinden Bad Ems and Nassau.
The Verbandsgemeinde Bad Ems-Nassau consists of the following Ortsgemeinden ("local municipalities"):
50°19′N 7°46′E / 50.32°N 7.77°E