| Birth Date: | 28 August 1890 |
| Birth Place: | Stockholm, Sweden |
| Death Date: | 7 May 1974 (aged 83) |
| Death Place: | Sollentuna, Stockholm, Sweden |
| Sport: | Horse riding |
| Club: | Ing1 IF, Stockholm |
| Show-Medals: | yes |
Karl Gustaf Wilhelm Dyrsch (28 August 1890 – 7 May 1974) was a Swedish Army officer and horse rider who competed in the 1920 Summer Olympics.[1] He and his horse Salamis were part of the Swedish team that won the gold medal in eventing. However, Dyrsch did not receive a medal as he failed to complete his individual routine.
Dyrsch was a career military officer holding the rank of lieutenant colonel in 1947.