The 1970 World Sportscar Championship season was the 18th season of FIA World Sportscar Championship motor racing. It featured the 1970 International Championship for Makes [1] and the 1970 International Cup for GT Cars,[1] which were contested concurrently from 31 January to 11 October over a ten race series. The International Championship for Makes, which was open to Group 6 Sports-Prototypes, Group 5 Sports Cars and Group 4 Special GT Cars,[2] was won by German manufacturer Porsche. The International Cup for GT Cars was also won by Porsche.