| William Keith | |
| Nationality: | South African |
| Sport: | Long-distance running |
| Event: | Marathon |
| Birth Date: | 26 November 1925 |
| Birth Place: | Petrus Steyn, South Africa |
| Death Place: | Bloemfontein, South Africa |
William Keith (26 November 1925 - 5 September 1999) was a South African long-distance runner. He competed in the marathon at the 1952 Summer Olympics.[1]