The Tacen Whitewater Course is a venue for canoe and kayak slalom competition in Tacen, Slovenia, a suburb of Ljubljana. Located on the Sava River, eight kilometers northwest of the city center, it is known locally as Kayak Canoe Club Tacen (). The course played an important role in development of the sport during the past six decades. In 1939, when its first competition was held, it was a natural rapid at the base of a dam in the Sava River. In 1990, after many upgrades, it was given a concrete channel and the features of a modern Olympic-style slalom course. The course now starts in the lake behind the dam, and the spillway is the first drop. Tacen hosts a major international competition almost every year, examples being the 1955, the 1991, and the 2010 Championships.