Sidney Dufresne (born 12 April 1986) is a French eventing rider.
Representing France, he has competed at the 2018 World Equestrian Games in Tryon, North Carolina, where he won a bronze medal with a French team and placed 18th individually.
Dufresne has also competed at the 2017 edition of the European Eventing Championships, where he placed 42nd individually and 11th in the team event.