| Birth Date: | 29 December 1957 |
| Birth Place: | Järfälla, Sweden |
| Sport: | Swimming |
| Club: | SK Laxen |
Björn Peter Pettersson (born 29 December 1957) is a retired Swedish swimmer who won a bronze medal in the 4 × 200 m freestyle relay at the 1974 European Aquatics Championships. Two years later at the 1976 Summer Olympics he finished seventh with the Swedish team in the same event.