Fencing at the 2012 Summer Olympics

The fencing competitions at the 2012 Olympic Games in London were held from 28 July to 5 August at the ExCeL Exhibition Centre. Ten events (six individual, four team) were contested. The International Fencing Federation (FIE) had pushed for the inclusion of two more team events, but the International Olympic Committee voted to keep the format at ten events.

The women's individual épée semi final became a notable controversy at the 2012 Olympics when a time-keeping error by a games volunteer helped German Britta Heidemann beat South Korea's Shin A-lam. Despite there being two hundredths of a second remaining in the match, the timer could only be reset to a whole second after the mistake. The extra time was enough for the German to score a winning attack and proceed to the final.