| Jack Keenan | |
| Nationality: | Canadian |
| Sport: | Boxing |
| Birth Date: | 14 September 1929 |
| Birth Place: | Montreal, Quebec, Canada |
| Death Place: | Montreal, Quebec, Canada |
Jack Keenan (14 September 1929 - 21 June 2009) was a Canadian boxer. He competed in the men's middleweight event at the 1948 Summer Olympics.[1] At the 1948 Summer Olympics, he lost to Mick McKeon of Ireland.[1]