Beluj (Hungarian: Béld) is a village and municipality in the Banská Štiavnica District, in the Banská Bystrica Region of Slovakia.
In historical records, the village was first mentioned in 1232 (Bolug) when it belonged to the Hunt family. In 1338 it passed to the Szechényi family, in the 16th century to Sitno and later on to the Coburgs.
The records for genealogical research are available at the state archive "Statny Archiv in Banska Bystrica, Slovakia"
Coordinates: 48°21′N 18°54′E / 48.350°N 18.900°E / 48.350; 18.900