The men's cycling omnium at the 2012 Olympic Games in London took place at the London Velopark on 4 and 5 August.

[1] Lasse Norman Hansen from Denmark won the gold medal.

France's Bryan Coquard won silver and Ed Clancy from Great Britain took bronze.

The omnium competition consisted of six events, with a point-for-place system.

[2] In case of a tie on points the time trial counts.