Marienrachdorf 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.

In 1972, in the course of municipal restructuring, the Verbandsgemeinde of Selters was founded, to which Marienrachdorf belongs.

Apportionment of seats on Council: Northwest of the community runs Bundesstraße 413, leading from Bendorf to Hachenburg.

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