Guy Martin, English motorcycle racer
Guy Martin (born 4 November 1981) is a British former motorcycle racer and heavy vehicle mechanic who became a television presenter. In July 2017, Martin retired from motorcycle racing.

Martin started racing in 1998 and in 2004 competed on a road circuit for the first time at the Isle of Man TT. He has a total of 17 podium finishes at TT events over several years. He has broken his back twice in racing accidents, in the 2010 TT and the 2015 Ulster Grand Prix.

In August 2017, Martin joined Formula 1 car team Williams' pit-crew for the Belgian GP. Martin returned to road racing in May 2019 at the Tandragee 100 in Northern Ireland.Martin starred in Closer to the Edge, a 2011 documentary on TT racing. He has since presented programmes on various engineering topics and the Channel 4 series Speed with Guy Martin when he set speed records in a variety of human and engine powered vehicles. He has authored four books, and competed in mountain bike pedal-cycle races.