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

The community lies in the Westerwald between Montabaur and Westerburg.

Mähren is a residential village and belongs to the Verbandsgemeinde of Wallmerod, a kind of collective municipality.

Right near the community runs Bundesstraße 8, linking Limburg an der Lahn and Hennef.

The nearest InterCityExpress stop is the railway station at Montabaur on the Cologne-Frankfurt high-speed rail line.