The 1938 AAA Championship Car season consisted of two races, beginning in Speedway, Indiana on May 30 and concluding in Syracuse, New York on September 10. There were also two non-championship events. The AAA National Champion and Indianapolis 500 winner was Floyd Roberts. Billy Winn died at Springfield during the non-championships race.

Schedule and results

All races running on Dirt/Brick Oval. In IZOD IndyCar Series 2011 Historical Record Book, the Indianapolis Motor Speedway is, from 1911 to 1938, listed as a "brick track" type circuit. (page 73) {{legend|#FB9902|Non-championship race|border=solid 1px #AAAAAA}}

Final points standings

Note: Drivers had to be running at the finish to score points. Points scored by drivers sharing a ride were split according to percentage of race driven. Starters were not allowed to score points as relief drivers, if a race starter finished the race in another car, in a points scoring position, those points were awarded to the driver who had started the car. The final standings based on reference.