| John McCormack | |
| Full Name: | John William McCormack |
| Birth Date: | 15 August 1925 |
| Birth Place: | San Francisco, California, U.S. |
| Death Place: | San Francisco, California, U.S. |
| Sport: | Diving |
John William McCormack (August 15, 1925 - November 11, 1987) was an American diver. He competed in the men's 10 metre platform event at the 1952 Summer Olympics.[1]