Namborn is a municipality in the district of Sankt Wendel, in Saarland, Germany. It is situated approximately 7 km north of Sankt Wendel, and 25 km southwest of Idar-Oberstein. It is approximately 40 km northeast of Saarbrücken on highway and the Nahe Valley Railway line. The distance to the Bostalsee is about 10 km, and to the county seat St. Wendel about 7 km. The most famous landmark of the community is the ruins of Liebenburg Castle on the Schloßberg in the Eisweiler district.