The 2010 ICF Canoe Slalom World Championships were held 8–12 September 2010 at Tacen Whitewater Course, Slovenia under the auspices of International Canoe Federation for the record-tying third time. It was the 33rd edition. Tacen hosted the event previously in 1955 and 1991 when it was part of Yugoslavia, and joins the following cities that have hosted the event three times: Spittal, Austria (1963, 1965, and 1977); Meran, Italy (1953, 1971, and 1983); Bourg St.-Maurice, France (1969, 1987, and 2002); and Augsburg, Germany (1957, 1985, and 2003). Women's single canoe (C1W) events became a medal event after being an exhibition in the previous championships.
Ten nations won medals at the championships, the most since the 2005 championships in Penrith. Slovakia was the big winner with five medals including three golds and two silvers. Men's canoe top medalists were Slovak Michal Martikán and France's Denis Gargaud Chanut and Fabien Lefèvre, each with two medals (one gold and one silver). Lefèvre became the first canoeist to medal in both canoe and kayak disciplines at the same championship while Jana Dukátová of Slovakia became the first woman to win gold in the C1 event and the first woman to medal in both canoe and kayak disciplines at the same championship. Dukátová won silver in the K1 women's event the day before. Italy's Daniele Molmenti won two medals in men's kayak with gold in K1 and bronze in K1 team.
Weather conditions forced schedule changes when flow from the River Sava increased water flow fivefold, resulting in course damage that delayed competition for nearly a day on 9 September.