Samuel Dumoulin (born 20 August 1980) is a French former professional road bicycle racer, who rode professionally between 2002 and 2019 for the , and teams. He now works as a directeur sportif for UCI ProTeam .
Dumoulin rode as an amateur for the TCCT (Tonic cyclo club of Ternay). He won the national youth championship in 1996, then the espoir (young professional) ParisâÂÂTours and Paris-Auxerre in 2001.
He dropped out of the 2004 Tour de France when he crashed after hitting a dog. Recovery took him four months and he did not race for the rest of the season. In 2008 he won the third stage after a breakaway of nearly , beating Will Frischkorn and Romain Feillu.