People from Lagny-sur-Marne

Léo Gausson (14 February 1860 – 27 October 1944) was a French landscape painter in the Neo-impressionist and Synthetic styles. He was also a printmaker and sculptor.

Benjamin Kudjow Thomas Boukpeti (born August 4, 1981 in Lagny-sur-Marne, France) is a French-born Togolese slalom canoeist who competed at the international level from 2003 to 2012. Competing in three Summer Olympics, he won a bronze in the K1 event in Beijing in 2008. Boukpeti was the first athlete from Togo to win an Olympic medal.

Mylène Lazare (born 20 November 1987, Lagny-sur-Marne) is a French swimmer, who won a bronze medal at the 2012 Summer Olympics in the women's 4 x 200 m freestyle.