| 2004 Copa Petrobras Santiago | |
|---|---|
| Date | 1–7 November |
| Edition | 1st |
| Category | ATP Challenger Series |
| Draw | 32S / 16D |
| Prize money | US$50,000 |
| Surface | Clay |
| Location | Santiago, Chile |
| Champions | |
| Singles | |
 Óscar Hernández | |
| Doubles | |
 Enzo Artoni /  Ignacio González King | |
The 2004 Copa Petrobras Santiago was a professional tennis tournament played on outdoor red clay courts. It was part of the 2004 ATP Challenger Series. It took place in Santiago, Chile between 1 and 7 November 2004.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| ESP | Óscar Hernández | 98 | 1 |
 BRA | Flávio Saretta | 111 | 2 |
 CHI | Adrián García | 112 | 3 |
 CZE | Jiří Vaněk | 132 | 4 |
| ARG | Edgardo Massa | 143 | 5 |
| ARG | Franco Squillari | 144 | 6 |
| BRA | André Sá | 159 | 7 |
 ECU | Nicolás Lapentti | 169 | 8 |
The following players received wildcards into the singles main draw:
Diego Cubas Guillermo Hormazábal Emiliano Massa Julio Peralta The following players received entry from the qualifying draw:
Francisco Cabello Diego Moyano 
Marko Neunteibl Fernando Vicente Óscar Hernández def. Nicolás Lapentti, 7–6(7–4), 6–4
Enzo Artoni / Ignacio González King def. Brian Dabul / Damián Patriarca, 6–3, 6–0
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