The 1964 World Sportscar Championship season was the 12th season of FIA 'World Sportscar Championship' motor racing. It featured the 1964 International Championship for GT Manufacturers which was open to Group 3 GT cars and was contested from February 16, 1964 to October 11, 1964 over a twenty race series. Titles were awarded in three engine capacity divisions:
Division I – Under 1300cc
Division II – Under 2000cc
Division III – Over 2000cc
The season also included the 1964 International Prototype Trophy which was open to Prototype cars and was contested over four of the twenty championship races. Titles were awarded for:
The twenty championship races each counted towards one or more of the five FIA Titles, as shown below.
International Championship for GT Manufacturers
Points were awarded for the top six positions in each division in each race on a 9-6-4-3-2-1 basis with the relevant points coefficient applied (see Schedule above).
Points were awarded only for the position gained by the best placed car from each manufacturer in each division at each race.