The 2008 British GT season was the 16th season of the British GT Championship. This was the first season with the new GT4 category, replacing the GTC category of previous years. Both championships were won at the Brands Hatch meeting in July, with Matt Nicoll-Jones and Stewart Linn securing the inaugural GT4 title in round 11, with James Gornall and Jon Barnes clinching the GT3 title, the following day in round 12.
