1972 USAC Championship Car season

The 1972 USAC Championship Car season consisted of ten races, beginning in Avondale, Arizona on March 18 and concluding at the same location on November 4. The USAC National Champion was Joe Leonard and the Indianapolis 500 winner was Mark Donohue. Jim Malloy death at Indianapolis in practice, he was 40 years old.

Schedule and results
All races running on Oval/Speedway.

Final points standings
Note: Sam Posey and Peter Revson not eligible for points.