Marie Troillet (born 24 March 1983) is a Swiss ski mountaineer.Troillet was born in Bagnes. She started ski mountaineering in 2000 and has been member of the national team since 2004 as well as member of the Dynafit-Team since 2005. Marie Troillet, who teaches in an elementary school, lives in Lourtier. Her brother Florent is also a competition ski mountaineer.