Simmern is an Ortsgemeinde – a community belonging to a Verbandsgemeinde – in the Westerwaldkreis in Rhineland-Palatinate, Germany.

The community lies in the Westerwald east of Koblenz on the edge of the Nassau Nature Park.

The village is characterized by agriculture and commuters to the nearby greater centre of Koblenz.

Simmern's neighbours are Neuhäusel, Koblenz, Montabaur, Eitelborn, Urbar, Vallendar and Kadenbach.

The wavy embattled (in the heraldic sense) pale with seven battlements in the community's arms refers to the placename Simmern, whose original name of Sevenburnen can be taken to mean “seven springs, wells, cisterns”.