Cycling competitions at the Beijing 2008 Summer Olympics were held from August 9 to August 23 at the Laoshan Velodrome (track events), Laoshan Mountain Bike Course, Laoshan BMX Field and the Beijing Cycling Road Course.
The event was dominated by the Great Britain team, who claimed 14 medals in total, including eight golds, seven of them from the ten events in the velodrome. This marked the beginning of a period of complete domination for Great Britain that would last to the 2020 Summer Olympics; The British team would claim 21 of the 30 gold medals awarded in the velodrome over the next three Games, 70% of all gold medals on offer.
Eighteen sets of medals were awarded in four disciplines: track cycling, road cycling, mountain bike, and, new for 2008, BMX. The following events were contested:
<nowiki>*</nowiki> Participate in the preliminary round only.