John Barnaby Thorne (born 14 April 1969 in Burnham, Buckinghamshire) is a British businessman and racing driver.

Thorne's motorsport career began in 2007 when he competed in the Production BMW Championship, taking one win and one fastest lap.

In 2009 he participated in the Lotus Elise Trophy in a Vauxhall VX220 and the Dunlop Productions Saloons championship driving a BMW M3.

[1] In April 2011, Thorney Motorsport announced they were intending to enter the last race of the season at Silverstone, with the intention of competing in a full campaign in 2012.

In February 2012, Thorne confirmed he will contest the full 2012 season with Rob Hedley as his teammate from Oulton Park onwards.