| Birth Date: | 2 July 1955 |
| Height: | 1.65m (05.41feet) |
| Weight: | 54kg (119lb) |
| Sport: | Swimming |
| Club: | EN Tours, Tours |
Sylvie Le Noach (born 2 July 1955) is a retired French swimmer. At the 1972 Summer Olympics, she competed in the 4 × 100 m medley relay and 100 m and 200 m backstroke, but did not reach the finals. She won a bronze medal in the 4 × 100 m freestyle relay at the 1974 European Aquatics Championships. She finished sixth in the same event at the 1976 Summer Olympics.