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

The community lies 7 km northeast of Selters at the junction of Weidenbach and Steinchesbach.

The community belongs to the Verbandsgemeinde of Selters, a kind of collective municipality.

Seat apportionment on council: The community lies west of Bundesstraße 8, leading from Limburg an der Lahn to Siegburg.

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