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

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

The name's spelling has changed over the centuries from Ebichusin to Ebeckusen und Ewighusen and then into Ewighausen.

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.