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

Between Weltersburg and Willmenrod is the rock formation and natural monument of Kranstein on the edge of a basalt quarry.

The municipal council is made up of 7 council members, including the extraofficial mayor (Bürgermeister), who were elected in a majority vote in a municipal election on 13 June 2004.

South of the community runs Bundesstraße 8, leading from Limburg an der Lahn to Hennef.

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