Mörlen is an Ortsgemeinde – a community belonging to a Verbandsgemeinde – in the Westerwaldkreis in Rhineland-Palatinate, Germany.
The community lies in the Westerwald between Limburg and Siegen on the boundary with North Rhine-Westphalia. The community lies in a hollow on a south slope on the course of the Kleine Nister, and is one of the richest communities in woodlands in the Westerwaldkreis. Mörlen belongs to the Verbandsgemeinde of Bad Marienberg, a kind of collective municipality. Its seat is in the like-named town.
Mörlen is among the oldest settled centres in the Upper Westerwald. While the brook name Nigra Morlaha had already been mentioned in writings from 914 and 1048, the actual community had its first documentary mention on 13 November 1262 in a document from the Marienstatt Abbey.
The council is made up of 12 council members who were elected in a majority vote in a municipal election on 13 June 2004.