| 2004 ATP Buenos Aires | |
|---|---|
| Date | 16–22 February |
| Edition | 32nd |
| Category | International Series |
| Draw | 32S/16D |
| Prize money | $355,000 |
| Surface | Clay / outdoor |
| Location | Buenos Aires, Argentina |
| Venue | Buenos Aires Lawn Tennis Club |
| Champions | |
| Singles | |
 Guillermo Coria[1] | |
| Doubles | |
| Lucas Arnold / Mariano Hood[2] | |
The 2004 ATP Buenos Aires was a men's tennis tournament played on outdoor clay courts at the Buenos Aires Lawn Tennis Club in Buenos Aires, Argentina and was part of the International Series of the 2004 ATP Tour. It was the 32nd edition of the tournament and was held from 16 February through 22 February 2004. First-seeded Guillermo Coria won the singles title.
- ^ "2004 Buenos Aires – Singles draw". Association of Tennis Professionals (ATP).
- ^ "2004 Buenos Aires – Doubles draw". Association of Tennis Professionals (ATP).