The World Anti-Doping Agency (WADA), French: Agence mondiale antidopage, is an independent foundation created through a collective initiative led by the International Olympic Committee (IOC). It was set up on November 10, 1999 in Lausanne, Switzerland, as a result of what was called the "Declaration of Lausanne", to promote, coordinate and monitor the fight against drugs in sport. Its current President is former Australian finance minister John Fahey, who in 2008 succeeded Dick Pound, a former IOC vice-president and outspoken opponent of drugs in sport. In 2001, WADA voted to move its headquarters to Montreal, Canada, the following year.

Initially funded by the International Olympic Committee, WADA now receives half of its budgetary requirements from them, with the other half coming from various governments throughout the world. Its governing bodies are also composed in equal parts by representatives from the sporting movement (including athletes) and governments of the world. The agency's key activities include scientific research, education, development of anti-doping capacities and monitoring of the World Anti-Doping Code – the document harmonizing regulations regarding anti-doping in all sports and countries. It also produces an annual list of prohibited substances and methods that sportspersons are not allowed to take or use.