| Birth Date: | 27 February 1942[1] |
| Birth Place: | Mölndal, Sweden |
| Death Date: | 26 April 2004 (aged 62) |
| Death Place: | Kungälv, Sweden |
| Sport: | Boxing |
Hasse Evert Thomsén (27 February 1942 - 26 April 2004) was a heavyweight boxer from Sweden who won a bronze medal at the 1972 Summer Olympics. In the semifinals he was defeated by Romania's eventual silver medalist Ion Alexe on points (0:5). Thomsén was a national heavyweight champion in 1969–72.[1]
In 1973–74, Thomsén had five professional bouts in Europe with a result of one loss and 4 draws.