Sandrine Mainville (born March 20, 1992) is a Canadian competition swimmer who specializes in the freestyle.

[1] She won a bronze medal in the 2015 World Aquatics Championships in the 4 x 100 m mixed freestyle in Kazan, Russia.

[1] Mainville was also part of the 2015 Pan American Games champion 4 x 100 m freestyle relay team for Canada in Toronto.

[2] She swam as part of Canada's relay team in the women's 4 x 100 m freestyle event.

[3] Mainville swam with teammates Penelope Oleksiak, Taylor Ruck, Michelle Williams and Chantal van Landeghem.