2005 Brasil Open

The 2005 Brasil Open was an ATP men's tennis tournament held in Mata de São João, Brazil. It was the fifth edition of the tournament and was held from February 14 to February 21. Rafael Nadal won the singles title.

Seeds
1 Rankings as of 14 February 2005.

Other entrants
The following players received wildcards into the main draw:
 * 🇪🇸 Àlex Corretja
 * 🇧🇷 André Sá
 * 🇧🇷 Júlio Silva

The following players received entry from the qualifying draw:
 * 🇦🇺 Peter Luczak
 * Juan Antonio Marín
 * 🇦🇷 Edgardo Massa
 * 🇦🇷 Martín Vassallo Argüello

The following player received entry as a lucky loser:
 * 🇪🇸 Guillermo García López

The following player received entry as a special exemption:
 * 🇦🇷 Mariano Puerta

Withdrawals

 * Before the tournament
 * 🇦🇷 Gastón Gaudio (Pubalgia)

Retirements

 * During the tournament
 * 🇪🇸 David Ferrer (Flu)
 * 🇪🇸 Óscar Hernández (Right ankle sprain)
 * 🇮🇹 Filippo Volandri (Flu)
 * 🇦🇷 Martín Vassallo Argüello (Heat stress)

Other entrants
The following pairs received wildcards into the main draw:
 * 🇧🇷 Marcos Daniel / 🇧🇷 Franco Ferreiro
 * 🇧🇷 Henrique Mello / 🇧🇷 Ricardo Mello

Withdrawals

 * During the tournament
 * 🇪🇸 Alberto Martín (lower back pain)

Singles
🇪🇸 Rafael Nadal defeated 🇪🇸 Alberto Martín 6–0, 6–7(2–7), 6–1
 * It was Nadal's 2nd title of the year and the 5th of his career.

Doubles
🇨🇿 František Čermák / 🇨🇿 Leoš Friedl defeated 🇦🇷 José Acasuso / 🇦🇷 Ignacio González King 6–4, 6–4
 * It was Čermák's 2nd title of the year and the 7th of his career. It was Friedl's 2nd title of the year and the 7th of his career.