| John Callahan | |
| Sport: | Cross-country skiing |
| Birth Date: | 15 September 1962 |
| Birth Place: | Los Angeles, California, United States |
John Callahan (born September 15, 1962) is an American cross-country skier. He competed in the men's 30 kilometre classical event at the 1992 Winter Olympics.[1] In 2003, he was the leader of an expedition to Mount Everest, appearing in the documentary film Skiing Everest.[2]