| 2004 Tennis Masters Cup | |
|---|---|
| Date | 13–21 November |
| Edition | 35th (singles) / 30th (doubles) |
| Category | Masters |
| Draw | 8S / 8D |
| Prize money | $3,700,000 |
| Surface | Hard / outdoor |
| Location | Houston, Texas, United States |
| Venue | Westside Tennis Club |
| Champions | |
| Singles | |
 Roger Federer[1] | |
| Doubles | |
 Bob Bryan / Mike Bryan[2] | |
The 2004 Tennis Masters Cup was a men's tennis tournament played on outdoor hard courts. It was the 35th edition of the year-end singles championships, the 30th edition of the year-end doubles championships, and was part of the 2004 ATP Tour. It took place at the Westside Tennis Club in Houston, Texas, United States, from November 13 through November 21, 2004. Roger Federer won the singles title.
- ^ "2004 Tennis Masters Cup – Singles results". Association of Tennis Professionals (ATP).
- ^ "2004 Tennis Masters Cup – Doubles results". Association of Tennis Professionals (ATP).