1966 World Sportscar Championship

The 1966 World Sportscar Championship season was the 14th season of the FIA "World Sportscar Championship" motor racing. It featured the 1966 International Manufacturers' Championship and the 1966 International Sports Car Championship, which were contested between 5 February 1966 and September 11, 1966, over a total of thirteen races. The International Manufacturers' Championship was open to Group 6 Sports-Prototypes and was contested in two engine capacity divisions, P1 (Up to 2000cc) and P2 (Over 2000cc). The International Sports Car Championship was open to Group 4 Sports Cars and was contested in three engine capacity divisions, S1 (Up to 1300cc), S2 (1301 to 2000cc) and S3 (Over 2000cc).

1966 World Sportscar Championship

The 1966 World Sportscar Championship season was the 14th season of the FIA "World Sportscar Championship" motor racing. It featured the 1966 International Manufacturers' Championship and the 1966 International Sports Car Championship, which were contested between 5 February 1966 and September 11, 1966, over a total of thirteen races. The International Manufacturers' Championship was open to Group 6 Sports-Prototypes and was contested in two engine capacity divisions, P1 (Up to 2000cc) and P2 (Over 2000cc). The International Sports Car Championship was open to Group 4 Sports Cars and was contested in three engine capacity divisions, S1 (Up to 1300cc), S2 (1301 to 2000cc) and S3 (Over 2000cc).