The Men's Boxing Tournament at the 2003 Pan American Games was held in the Carlos Teo Cruz Boxing Coliseum in Santo Domingo, Dominican Republic from August 8 to August 15.

It served as a qualification tournament for the 2004 Summer Olympics in Athens, Greece.

Raúl CastañedaMexico James PereiraBrazil Yonnhy PerezColombia Yosvani AguileraCuba Francisco Javier VargasMexico Marcos CostaBrazil Alfredo AnguloMexico Alexander BrandColombia Argenis CasimiroDominican Republic Devin VargasUnited States Victor BisbalPuerto Rico