The National Auto Sport Association (NASA) is an American motorsports organization promoting road racing and high-performance driver education. Founded in 1991, NASA hosts High Performance Driving Events (HPDE), automotive rallies, Time Trial, autocross and amateur, club-level automotive racing, divided amongst regionally based chapters within the United States. In September 2006, NASA held its first-ever National Championships at Mid-Ohio. The NASA National Championships are open to any driver who earns points in a minimum of five regional races (in any NASA region or combination of regions). Since 2021, the NASA National Championships have been held at Daytona International Speedway.

Time trial

Racing in the time trial classes allows drivers to compete against each other for the fastest lap. It is currently NASA's mid-level offering, fitting between the HPDE and road racing series.

Competitive racing

NASA currently offers the following Road Racing series:

Other sanctioned competition series

NASA regions