2023 GB4 Championship

The 2023 GB4 Championship partnered by the BRDC was the second season of a motor racing championship for open wheel, formula racing cars in Britain. The 2023 season, which had been organised by MotorSport Vision, was run over seven triple-header rounds.

GB4 will act as a direct feeder series to higher open-wheel categories, including the existing GB3 Championship partnered by the BRDC. GB4 will run primarily on the same British GT race programme as GB3, and retain many of the same championship partners.

Race calendar and results
The provisional calendar was announced on 15 October 2022. The championship will support the British GT championship at six of its seven meetings.

Championship standings

 * Scoring system

Points were awarded to the top 20 classified finishers in races one and two, with the third race awarding points to only the top 15. Race three, which had its grid formed by reversing the qualifying order, awarded extra points for positions gained from the drivers' respective starting positions.