The 2003 Brasil Open was a men's tennis tournament played on outdoor hard courts in Costa do Sauipe resort, Mata de São João, in Brazil and was part of the International Series of the 2003 ATP Tour.

Sjeng Schalken won the singles title.

Sjeng Schalken defeated Rainer Schüttler 6–2, 6–4 Todd Perry / Thomas Shimada defeated Scott Humphries / Mark Merklein 6–2, 6–4

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