The 1984 World Sportscar Championship season was the 32nd season of FIA "World Sportscar Championship" motor racing. It featured the 1984 FIA World Endurance Championship, which was open to FIA Group C1, Group C2 and Group B cars and to IMSA GTP, GTX, GTO and GTU cars. The championship was contested over an eleven race series which ran from 23 April to 2 December 1984.

The World Sportscar Championship was the world series run for sports car racing by the FIA from 1953 to 1992. The championship evolved from a small collection of the most important sportscar, endurance, and road racing events in Europe and North America with dozens of gentleman drivers at the grid to a professional racing series where the world's largest automakers spent millions of dollars per year.