Weltersburg is an Ortsgemeinde – a community belonging to a Verbandsgemeinde – in the Westerwaldkreis in Rhineland-Palatinate, Germany.
Weltersburg lies 4 km southeast of Westerburg. Since 1972 it has belonged to what was then the newly founded Verbandsgemeinde of Westerburg, a kind of collective municipality found only in Rhineland-Pfalz. Its seat is in the like-named town.
The 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 Autobahn interchange is Montabaur on the A 3 (Cologne–Frankfurt). The nearest InterCityExpress stop is the railway station at Montabaur on the Cologne-Frankfurt high-speed rail line.