Ayouba Ali Sihame was the youngest competitor to be selected by Comoros at the London Games, aged 17. She qualified after receiving a universality place by FINA for the women's 100 metre freestyle as her best time of one minute and 21.54 seconds was not within the standard entry time. Sihame was drawn in the first heat of the competition, which was held on 1 August, finishing third (and last) in her heat with a time of one minute and 14.40 seconds. She finished 48 (and last) of all swimmers who competed, and did not advance to the later stages of the women's 100 metre freestyle.