| Jack Walter | |
| Sport: | Middle-distance running |
| Event: | 800 metres |
| Birth Date: | 6 November 1908 |
| Birth Place: | Listowel, Ontario, Canada |
| Death Place: | Sheboygan, Wisconsin, U.S. |
John Sproule Walter (6 November 1908 – 17 July 1971) was a Canadian middle-distance runner. He competed in the men's 800 metres at the 1928 Summer Olympics. Walter finished fourth in the 1930 British Empire Games 1 mile.[1] He was later an attorney in Sheboygan, Wisconsin, and died there in 1971 after a long illness.[2]