Gjessø is an urban Settlement in Silkeborg Municipality, in the region of Central Denmark, Denmark. Gjessø lies at 101 m above sea level. It has 870 inhabitants (2026). The nearest city is Silkeborg, 7.3 km to the northeast. Among the landmarks around are Museum Jorn (6.6 km), Illerup Ådal (28 km) and Silkeborg Museum (7.1 km). Among the natural features are Himmelbjerget (12.0 km) and Store Hørbyhøj (5.8 km).