| Olympic medal record
|Silver||1928 Amsterdam||Team eventing|
Wilhelm Eugen Johansen (February 1, 1892 – 1973) was a Norwegian horse rider who competed in the 1920 Summer Olympics, in the 1928 Summer Olympics, and in the 1936 Summer Olympics.
In 1920 he and his horse Nökken finished eleventh in the individual eventing. The Norwegian eventing team did not finish the team eventing competition, because only two riders were able to finish the individual competition. Johnsen and Nökken also participated in the individual jumping event and finished 13th.
Eight years later he and his horse Baby won the silver medal as member of the Norwegian eventing team in the team eventing competition after finishing 27th in the individual eventing.