Simmern is a former Verbandsgemeinde ("collective municipality") in the Rhein-Hunsrück district, in Rhineland-Palatinate, Germany. Its seat was in Simmern. On 1 January 2020 it was merged into the new Verbandsgemeinde Simmern-Rheinböllen.

The Verbandsgemeinde Simmern consisted of the following Ortsgemeinden ("local municipalities"):

Altweidelbach Belgweiler Bergenhausen Biebern Bubach Budenbach Fronhofen Holzbach Horn Keidelheim Klosterkumbd Külz Kümbdchen Laubach Mengerschied MutterschiedNannhausenNeuerkirchNiederkumbdOhlweilerOppertshausenPleizenhausenRavengiersburgRayerschiedReichRiegenrothSargenrothSchönbornSimmernTiefenbachWahlbachWüschheim

49°58′59″N 7°31′01″E/49.983°N 7.517°E/ 49.983; 7.517