Brazil at the 2003 Pan American Games
Brazil competed at the 2003 Pan American Games, held in Santo Domingo, Dominican Republic, from 1 to 17 August 2003.
Medalists
The following competitors from Brazil won medals at the games. In the by discipline sections below, medalists' names are bolded.Results by event
Athletics
;Track;Road
| Athlete | Event | Time | Rank |
| Vanderlei de Lima | Men's marathon | 2:19:08 | |
| Genílson da Silva | Men's marathon | DNF | — |
| Márcia Narloch | Women's marathon | 2:39:54 | |
| Maria do Carmo Guimarães | Women's marathon | 2:51:58 | 5 |
| José Alessandro Bagio | Men's 20 km race walk | DSQ | — |
| Mário dos Santos | Men's 50 km race walk | 4:07:37 | |
| Sérgio Galdino | Men's 50 km race walk | 4:24:42 | 4 |
;Field
Basketball
Men's tournament
- Marcelinho Machado
- Arnaldinho Filho
- Dede Barbosa
- Valtinho Silva
- Murilo da Rosa
- Demétrius Ferraciu
- Alex Garcia
- Anderson Varejão
- Guilherme Giovannoni
- Tiago Splitter
- André Pereira
- Renato Pinto