1965 USAC Championship Car season

The 1965 USAC Championship Car season consisted of 18 races, beginning in Avondale, Arizona on March 28 and concluding at the same location on November 21. This season was notable for the Hoosier Grand Prix, the first Championship Car event held on a road course since the 1937 Vanderbilt Cup. The USAC National Champion was Mario Andretti and the Indianapolis 500 winner was Jim Clark.

Schedule and results
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 * No pole is awarded for the Pikes Peak Hill Climb, in this schedule on the pole is the driver who started first. No lap led was awarded for the Pikes Peak Hill Climb, however, a lap was awarded to the drivers that completed the climb.

Final points standings
Note: Bobby Johns is not eligible for points.