Walter Loosli (1901–?) was a Swiss coxswain. He competed at the 1924 Summer Olympics in Paris with the men's coxed four. In the official Olympic record and the FISA database, he coxed all three races. According to the Sports Reference database, Loosli coxed the first heat and the repechage only and was replaced in the final by Émile Lachapelle. The Swiss team won the final.