Gusen or Güsen may refer to: Gusen concentration camp, a complex of three different Nazi concentration camps in Upper Austria (Gusen I, Gusen II, Gusen III) Gusen (river), a river in Upper Austria Sankt Georgen an der Gusen, a small municipality in Upper Austria Gusen (Langenstein), a village in the municipality of Langenstein, Upper Austria Güsen, Saxony-Anhalt, a borough of Elbe-Parey in Saxony-Anhalt, Germany