2004 Brasil Open
Date	February 23 – February 29
Edition	4th
Category	International Series
Surface	Clay / Outdoor
Location	Mata de São João, Brazil
Champions
Singles
Gustavo Kuerten
Doubles
Mariusz Fyrstenberg / Marcin Matkowski
← 2003 · Brasil Open · 2005 →

The 2004 Brasil Open was a men's tennis tournament played on outdoor clay courts in Costa do Sauipe resort, Mata de São João, in Brazil and was part of the International Series of the 2004 ATP Tour. It was the fourth edition of the tournament and ran from February 23 through February 29, 2004. Gustavo Kuerten won the singles title.

Winners

Men's singles

Gustavo Kuerten defeated Agustín Calleri 3–6, 6–2, 6–3

• It was Kuerten's only title of the year and the 28th of his career.

Men's doubles

Mariusz Fyrstenberg / Marcin Matkowski defeated Tomas Behrend / Leoš Friedl 6–2, 6–2

• It was Fyrstenberg's only title of the year and the 2nd of his career. It was Matkowski's only title of the year and the 2nd of his career.