The 2021 Michelin Ginetta Junior Championship was a multi-event, one make motor racing championship held across England and Scotland. The championship featured a mix of professional teams and privately funded drivers, aged between 14 and 17, competing in Ginetta G40s that conformed to the technical regulations for the championship. It formed part of the extensive program of support categories built up around the British Touring Car Championship centrepiece. It was the fifteenth Ginetta Junior Championship, commencing on 8 May 2021 at Thruxton and concluding on 24 October 2021 at Brands Hatch, utilising the Grand Prix circuit, after ten meetings, all in support of the 2021 British Touring Car Championship.[1] After a one year absence, Ginetta confirmed the Winter Series will return at the end of the year.[2] A scholarship allowed a driver who had raced in go karts to start racing cars.[3] The first round of the championship saw the record broken for most entries in a Ginetta Junior event.[4] R Racing and Elite Motorsport are the most competitive teams, with Fox Motorsport also winning at Snetterton.[5]