2025 GB3 Championship

The 2025 GB3 Championship was a motor racing championship for open wheel, formula racing cars held across Europe. The 2025 season was the tenth organised by the British Racing Drivers' Club in the United Kingdom, and the fifth season under the GB3 moniker after rebranding from the BRDC British Formula 3 Championship in mid-2021. The championship featured a mix of professional motor racing teams and privately funded drivers. The season was run over eight triple-header rounds. It started in April and ended in October.

Rodin Motorsport driver Alex Ninovic won the Drivers' Championship with three races to spare, while his team defended their Teams' Championship title a race later during the final weekend.

Rodin Motorsport driver Alex Ninovic (top) won the Drivers' Championship, with his team also winning the Teams' Championship. Patrick Heuzenroeder (middle), finished runner-up in the championship driving for Xcel Motorsport. Hitech TGR driver Deagen Fairclough (bottom), finished the championship in third place.