| 1948 AAA Championship Car season | |
|---|---|
| AAA National Championship Trail | |
| Season | |
| Races | 12 |
| Start date | April 25 |
| End date | October 10 |
| Awards | |
| National champion |  Ted Horn |
| Indianapolis 500 winner | Mauri Rose |
The 1948 AAA Championship Car season consisted of 12 races, beginning in Arlington, Texas on April 25 and concluding in Du Quoin, Illinois on October 10. The AAA National Champion was Ted Horn, and the Indianapolis 500 winner was Mauri Rose. Ralph Hepburn was killed at Indianapolis in practice, and Ted Horn was killed at the last race in DuQuoin.