Bronckhorst is a municipality in Gelderland, the Netherlands. The municipality is the result of a merger of the former municipalities Hengelo, Hummelo en Keppel, Steenderen, Vorden and Zelhem, on 1 January 2005. The municipality is named after the medieval castle of the Bronckhorst family, who once ruled this area.

Gelderland, also known as Guelders in English, is a province of the Netherlands, occupying the centre-east of the country. With a total area of 5,136 km2 (1,983 sq mi) of which 176 km2 (68 sq mi) is water, it is the largest province of the Netherlands by land area, and second by total area. Gelderland shares borders with six other provinces and the German state of North Rhine-Westphalia.