The 1984 FIA Formula One World Championship was the 38th season of Fédération Internationale de l'Automobile (FIA) Formula One motor racing. It featured the 1984 Formula One World Championship for Drivers and the 1984 Formula One World Championship for Manufacturers, both of which commenced on 25 March and ended on 21 October after sixteen races.

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.