The 2001 FIA Formula One World Championship was the 55th season of FIA Formula One motor racing. It featured the 2001 Formula One World Championship for Drivers and the 2001 Formula One World Championship for Constructors, which were contested concurrently over a seventeen-race series that commenced on 4 March and ended on 14 October.

Formula One, commonly known as Formula 1 or F1, is the highest class of international racing for open-wheel single-seater formula racing cars sanctioned by the Fédération Internationale de l'Automobile (FIA). The FIA Formula One World Championship has been one of the world's premier forms of racing since its inaugural running in 1950. The word formula in the name refers to the set of rules all participants' cars must follow. A Formula One season consists of a series of races, known as Grands Prix. Grands Prix take place in multiple countries and continents on either purpose-built circuits or closed public roads.