| Magnus Wassén | |
| Full Name: | Sten Magnus Wassén |
| Birth Place: | Partille, Sweden |
| Death Place: | Gothenburg, Sweden |
| Classes: | 5.5 Metre |
| Show-Medals: | yes |
Sten Magnus Wassén (1 September 1920 – 23 June 2014) was a Swedish sailor who competed in the 1952 Summer Olympics. Together with his elder brother Folke he won a bronze medal as crew member of the Swedish boat Hojwa in the 5.5 metre class event.