Clément Lefert (born 26 September 1987 in Nice) is a retired French Olympic champion in swimming.

[1][2][3] He won a gold medal at the London 2012 Summer Olympics in the 4 × 100 meters freestyle relay, with teammates Amaury Leveaux, Fabien Gilot, and Yannick Agnel, besting the American relay team that included Michael Phelps.

[4] He also won a silver medal in the 4 x 200 meters freestyle relay.

[3] On 1 January 2013, Lefert was made a Knight (Chevalier) of the Legion of Honour.

[6] After finishing his higher education studies, he started as a trader in a commodities trading company in London.