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 Mutterschied<li> Nannhausen <li> Neuerkirch <li> Niederkumbd <li> Ohlweiler <li> Oppertshausen <li> Pleizenhausen <li> Ravengiersburg <li> Rayerschied <li> Reich <li> Riegenroth <li> Sargenroth <li> Schönborn <li> Simmern <li> Tiefenbach <li> Wahlbach <li> Wüschheim