The 1978 British Formula One season (formally the 1978 Aurora AFX F1 Championship) was the first British Formula One Series season. It commenced on March 24, 1978, and ended on September 24 after twelve races.
The Aurora AFX F1 Championship replaced the Shellsport Group 8 series that had been run in 1976 and 1977 to Formula Libre rules. As part of the changes, Formula 5000 cars were no longer eligible to race in the Aurora AFX championship. Formula 1 cars were now the focus of the series, with Formula 2 cars still being permitted as a 'B-class'.