| Fausto del Rosario | |
| Full Name: | Fausto del Rosario Mercedes |
| Nationality: | Dominican |
| Sport: | Boxing |
| Birth Date: | 14 January 1971 |
Fausto del Rosario Mercedes (born 14 January 1971) is a Dominican Republic boxer. He competed in the men's light flyweight event at the 1992 Summer Olympics.[1] At the 1992 Summer Olympics, he lost to Eric Griffin of the United States.[1]