1956 USAC Championship Car season

The 1956 USAC Championship Car season consisted of 12 races, beginning in Speedway, Indiana on May 30 and concluding in Phoenix, Arizona on November 12. There were also three non-championship events. The USAC National Champion was Jimmy Bryan and the Indianapolis 500 winner was Pat Flaherty. This was the first year that the National Championship was sanctioned by the USAC, after the withdrawal of the AAA from all forms of racing in August 1955.

Schedule and results
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 * Indianapolis 500 was USAC-sanctioned and counted towards the FIA F1 World Drivers' Championship title.