| 2004 Chennai Open | |
|---|---|
| Date | 5–11 January |
| Edition | 9th |
| Category | International Series |
| Draw | 32S / 16D |
| Prize money | $355,000 |
| Surface | Hard / outdoors |
| Location | Chennai, India |
| Venue | SDAT Tennis Stadium |
| Champions | |
| Singles | |
 Carlos Moyá | |
| Doubles | |
| Rafael Nadal / Tommy Robredo | |
The 2004 Chennai Open was a men's tennis tournament played on outdoor hard courts at the SDAT Tennis Stadium in Chennai in India, part of the International Series of the 2004 ATP Tour. It ran from 5 January through 11 January 2004. First-seeded Carlos Moyá won the singles title while Rafael Nadal and Tommy Robredo took the doubles.
