| Juan Trejo | |
| Nationality: | Mexican |
| Sport: | Water polo |
| Birth Date: | 12 May 1927 |
| Birth Place: | Orizaba |
| Death Place: | Mexico City |
Juan Trejo (12 May 1927 - 6 November 2012) was a Mexican water polo player. He competed in the men's tournament at the 1952 Summer Olympics.[1]