| Marianne Leeson | |
| Birth Date: | 1987 10, df=yes |
| Birth Place: | Burlington, Ontario[1] |
| Height: | 1.73 m |
| Weight: | 62 kg |
| Sport: | Snowboarding |
| Event: | Parallel slalom Parallel giant slalom |
Marianne Leeson (born 19 October 1987 in Burlington, Ontario) is a Canadian snowboarder. She competed in the slalom events at the 2014 Winter Olympics for Canada and placed 5th. Highest ever finish of a Canadian Female Alpine Snowboarder at the Olympic games.