| Birth Date: | 22 March 1955 |
| Birth Place: | Solna Municipality, Stockholm County, Sweden |
| Strokes: | Breaststroke |
| Club: | Stockholmspolisens IF |
Britt-Marie Smedh (born 22 March 1955) is a former Swedish breaststroke swimmer who represented Stockholmspolisens IF. Smedh participated in the 1972 Summer Olympics, finishing 7th in the 100 m breaststroke, 10th in the 200 m breaststroke and 8th in the 4 × 100 m medley relay.
Smedh is mother to Swedish Olympic medalist Therese Alshammar.