| Doubles | |
|---|---|
| 2003 Brasil Open | |
| Champions |   |
| Runners-up |   |
| Final score | 6–2, 6–4 |
Scott Humphries and Mark Merklein were the defending champions but lost in the final 6–2, 6–4 against Todd Perry and Thomas Shimada.
Scott Humphries, is a retired professional tennis player from the United States.
Mark Merklein is a Bahamas-born former college and professional tennis player. He played for the Bahamas Davis Cup team from 1999–2004.
Todd Perry is a former professional tennis player from Australia.
| First Round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | | 3 | 6 | 4 | |||||||||||||||||||||||
| WC | | 6 | 2 | 6 | WC | | 4 | 4 | |||||||||||||||||||
 | 3 | 4 | | 6 | 6 | ||||||||||||||||||||||
| | 6 | 6 | | 6 | 2 | 6 | |||||||||||||||||||||
| 3 | | 4 | 2 |  | 4 | 6 | 3 | ||||||||||||||||||||
| | 6 | 6 | | 4 | 3 | ||||||||||||||||||||||
| ALT |   | 5 | 3 | | 6 | 6 | |||||||||||||||||||||
| | 7 | 6 | | 6 | 6 | ||||||||||||||||||||||
| | 6 | 6 | 2 | | 2 | 4 | |||||||||||||||||||||
| | 1 | 3 | | 1 | 6 | 3 | |||||||||||||||||||||
| WC | | 1 | 5 | 4 | | 6 | 2 | 6 | |||||||||||||||||||
| 4 | | 6 | 7 | 4 | | 1 | 65 | ||||||||||||||||||||
  | 65 | 4 | 2 | | 6 | 77 | |||||||||||||||||||||
| | 77 | 6 | | 3 | 77 | 2 | |||||||||||||||||||||
 | 3 | 77 | 2 | 2 | | 7 | 65 | 7 | |||||||||||||||||||
| 2 | | 6 | 65 | 6 | |||||||||||||||||||||||
Enzo Artoni and Daniel Melo were the defending champions but only Melo competed that year with Ricardo Schlachter.
Todd Woodbridge and Mark Woodforde were the defending champions but only Woodbridge competed that year with Wayne Arthurs.
Byron Black and Donald Johnson were the defending champions but only Johnson competed that year with Gustavo Kuerten.
Jan-Michael Gambill and Scott Humphries were the defending champions but they competed with different partners that year, Gambill with Jonathan Stark and Humphries with Justin Gimelstob.
Michaël Llodra and Diego Nargiso were the defending champions but only Llodra competed that year with Eyal Ran.
Paul Hanley and Nathan Healey won in the final 7–6 (12–10), 6–2 against Irakli Labadze and Attila Sávolt.
Petr Pála and David Rikl were the defending champions but only Pála competed that year with David Adams.
Sébastien Grosjean and Nicolas Kiefer were the defending champions but lost in the quarterfinals to Kenneth Carlsen and Xavier Malisse.
Wayne Arthurs and Paul Hanley won in the final 6–2, 6–4 against Zeng Shaoxuan and Zhu Benqiang.
Jeff Coetzee and Chris Haggard were the defending champions but lost in the first round to Jiří Novák and Petr Pála.
Hyung-Taik Lee and Vladimir Voltchkov were the defending champions but only Lee competed that year with Brian Vahaly.
Mark Knowles and Daniel Nestor were the defending champions but lost in the first round to Nicolas Kiefer and Wesley Moodie.
James Blake and Mark Merklein were the defending champions but lost in the first round to Jeff Coetzee and Chris Haggard.
Wayne Black and Kevin Ullyett were the defending champions but did not compete that year.
James Blake and Mark Merklein were the defending champions, but did not participate this year.
Grant Stafford and Kevin Ullyett were the defending champions, but did not participate this year.
Dave Randall and Greg Van Emburgh were the defending champions, but did not participate together this year. Randall partnered Jean-Philippe Fleurian, losing in the first round. Van Emburgh partnered Geoff Grant, losing in the first round.
Mark Merklein and Vincent Spadea were the defending champions, but lost in the quarterfinals this year.
Pat Cash and Patrick Rafter were the defending champions, but lost in the quarterfinals this year.
Scott Humphries defeated Mark Philippoussis in the final, 7–6(7–5), 3–6, 6–4 to win the Boys' Singles tennis title at the 1994 Wimbledon Championships.