The 2006 Brasil Open was an ATP Tour men's tennis tournament held in Costa do Sauipe resort, Mata de São João, Brazil and played on outdoor clay courts. It was the sixth edition of the tournament and was held from 20 to 27 February 2006. Nicolás Massú won the singles title.

Singles main draw entrants

Seeds

1 Rankings as of 20 February 2006.

Other entrants

The following players received wildcards into the main draw: The following players received entry from the qualifying draw: The following players received entry as lucky losers: The following player received entry due to a protected ranking:

Withdrawals

Before the tournament

Doubles main draw entrants

Seeds

Other entrants

The following pairs received wildcards into the main draw: The following pairs received entry as alternates:

Champions

Singles

Nicolás Massú defeated 🇪🇸 Alberto Martín 6–3, 6–4

Doubles

🇨🇿 Lukáš Dlouhý / 🇨🇿 Pavel Vízner defeated 🇵🇱 Mariusz Fyrstenberg / 🇵🇱 Marcin Matkowski 6–1, 4–6, [10–3]