The Sports Car Club of America (SCCA) is a non-profit American automobile club and sanctioning body supporting Autocross, Rallycross, HPDE, Time Trial, Road Racing, RoadRally, and Hill Climbs in the United States. Formed in 1944, it runs many programs for both amateur and professional racers.

The SCCA traces its roots to the Automobile Racing Club of America (not to be confused with the current stock car series of the same name). ARCA was founded in 1933 by brothers Miles and Sam Collier, and dissolved in 1941 at the outbreak of World War II. The SCCA was formed in 1944 as an enthusiast group. The SCCA began sanctioning road racing in 1948 with the inaugural Watkins Glen Grand Prix. Cameron Argetsinger, an SCCA member and local enthusiast who would later become Director of Pro Racing and Executive Director of the SCCA, helped organize the event for the SCCA.

In 1951, the SCCA National Sports Car Championship was formed from existing marquee events around the nation, including Watkins Glen, Pebble Beach, and Elkhart Lake. Many early SCCA events were held on disused air force bases, organized with the help of Air Force General Curtis LeMay, a renowned enthusiast of sports car racing. LeMay loaned out facilities of Strategic Air Command bases for the SCCA's use; the SCCA relied heavily on these venues during the early and mid-1950s during the transition from street racing to permanent circuits.

By 1962, the SCCA was tasked with managing the U.S. World Sportscar Championship rounds at Daytona, Sebring, Bridgehampton and Watkins Glen. The club was also involved in the Formula 1 U.S. Grand Prix. SCCA Executive Director John Bishop helped to create the United States Road Racing Championship series for Group 7 sports cars to recover races that had been taken by rival USAC Road Racing Championship. Bishop was also instrumental in founding the SCCA Trans-Am Series and the SCCA/CASC Can-Am series. In 1969, tension and infighting over Pro Racing's autonomy caused Bishop to resign and help form the International Motor Sports Association.

The autocross program is branded as "Solo". Up to four cars at a time run on a course laid out with traffic cones on a large paved surface, such as a parking lot or airport runway, without interfering with one another.

Competitions are held at the regional, divisional, and national levels. A national champion in each class is determined at the national championship (usually referred to as "Nationals") held in September. In 2009, Solo Nationals moved to the Lincoln Airpark in Lincoln, Nebraska. Individual national-level events called "Championship Tours" and "Match Tours" are held throughout the racing season. The SCCA also holds national-level events in an alternate format called "ProSolo". In ProSolo, two cars compete at the same time on mirror-image courses with drag racing-style starts, complete with reaction and 60-foot times. Class winners and other qualifiers (based on time differential against the class winner) then compete in a handicapped elimination round called the "Challenge". Points are awarded in both class and Challenge competition, and an annual champion is crowned each September at the ProSolo Finale event in Lincoln, Nebraska.

The SCCA sanctions "RallyCross" events, similar to autocross, but on a non-paved course. SCCA ProRally was a national performance rally series similar to the World Rally Championship. At the end of the 2004 season SCCA dropped ProRally and ClubRally. A new organization, Rally America, picked up both series starting in 2005.

Road rallies are run on open, public roads. These are not races in the sense of speed, but of precision and navigation. The object is to drive on time, arriving at checkpoints with the proper amount of elapsed time from the previous checkpoint. Competitors do not know where the checkpoints are.