Tanzbrunnen, event venue in Deutz, Cologne, Germany

Tanzbrunnen is an event venue in Deutz located directly along the Rhine riverbank with an open-air stage. The site includes a theater, beer garden, beach club, and various spaces designed for different types of performances and gatherings.

The site began as the Messebrunnen, a geometric ornamental garden with a circular basin laid out in 1930 by Theodor Nußbaum and Josef Giesen on the grounds of the former Prussian Fort XV. In 1949 Josef Op Gen Oorth added a walkable rondell above the basin that served as a dance floor, giving the Tanzbrunnen its name. Frei Otto's foldable star-wave tent followed for the 1957 Bundesgartenschau, and the first German open-air jazz festival was held here in 1967.

The name refers to the circular basin built in 1949 by Josef Op Gen Oorth, whose walkable centre served as a dance floor. Since 1967, when Gigi Campi held Germany's first open-air jazz festival here, the grounds have hosted concerts and the talent show Linus' Talentprobe, which ran until September 2017.

The grounds lie in Deutz on the right bank of the Rhine, north of the old exhibition halls, within the Rheinpark. Six folding umbrellas by Frei Otto, added for the 1971 Bundesgartenschau, shelter the open-air stage audience from wind and rain. The entrance tent, a 40-metre steel arch with a 350 m² membrane, gives covered arrival in bad weather.

The fountain's 55-metre basin holds 1,200 cubic metres of water and takes 26 hours to fill; its 132 nozzles stage three water displays, with seven foam-effect jets rising to eight metres. It has been a protected monument since 1989.