Cycling competitions at the Beijing 2008 Summer Olympics were held from August 9 to August 23 at the Laoshan Velodrome, Laoshan Mountain Bike Course, Laoshan BMX Field and the Beijing Cycling Road Course.

Great Britain, represented by the British Olympic Association (BOA), competed at the 2008 Summer Olympics in Beijing, China. The United Kingdom was represented by the British Olympic Association (BOA), and the team of selected athletes was officially known as Team GB. Britain is one of only five NOCs to have competed in every modern Summer Olympic Games since 1896. The delegation of 547 people included 311 competitors – 168 men, 143 women – and 236 officials. The team was made up of athletes from the whole United Kingdom including Northern Ireland. Additionally some British overseas territories compete separately from Britain in Olympic competition.