National Olympic Committee Kenya (NOCK) sent a total of 47 athletes, 27 men and 20 women, competed in athletics (specifically in the middle-distance events and marathon), boxing, swimming and weightlifting.

Among these champions, only Kemboi managed to recapture his gold medal from Athens, after winning the men's steeplechase event.

Kenya's top swimmer Jason Dunford, who specialized in the butterfly and freestyle events, became the nation's first male flag bearer at the opening ceremony since 2000.

Two more medals were redistributed to Kenyan athletes after the games ended due to doping cases.

Middle-distance runner and world champion David Rudisha became the first athlete to set a world record on the track in London, as he won the gold medal in the men's 800 m.[2] Kenyan athletes have so far achieved qualifying standards in the following athletics events (up to a maximum of 3 athletes in each event at the 'A' Standard, and 1 at the 'B' Standard):[3][4] Kenya has qualified boxers for the following events[5] Kenyan swimmers have so far achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the Olympic Qualifying Time (OQT), and 1 at the Olympic Selection Time (OST)):[6][7] Kenya has qualified 1 athlete.