Grillenburg may refer to: Grillenburg (Tharandt), a village in the municipality of Hartha in the borough of Tharandt, Sächsische Schweiz-Osterzgebirge district, Saxony Grillenburg Hunting Lodge in the Tharandt Forest, Sächsische Schweiz-Osterzgebirge district, Saxony Grillenburg Triangle, the motorcycle track of the 1st Sachsenring, in the Tharandt Forest, Sächsische Schweiz-Osterzgebirge district, Saxony Grillenburg Sandstone, the Elbe sandstone type in the Tharandt Forest, Sächsische Schweiz-Osterzgebirge district, Saxony Grillenburg (Harz), a ruined castle above Grillenberg in the Harz Mountains, Mansfeld-Südharz district, Saxony-Anhalt