| 2003 Tennis Masters Cup | |
|---|---|
| Date | November 8 – November 16 |
| Edition | 34th (singles) / 29th (doubles) |
| Surface | Hard / outdoor |
| Location | Houston, United States |
| Venue | Westside Tennis Club |
| Champions | |
| Singles | |
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| Doubles | |
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The 2003 Tennis Masters Cup was a tennis tournament played on outdoor hard courts. It was the 34th edition of the year-end singles championships and the 29th edition of the year-end doubles championships, and was part of the 2003 ATP Tour. It took place at the Westside Tennis Club in Houston, Texas in the United States from November 8 through November 16, 2003.
Roger Federer defeated
Andre Agassi 6–3, 6–0, 6–4
Bob Bryan /
Mike Bryan defeated
Michaël Llodra /
Fabrice Santoro 6–7(6–8), 6–3, 3–6, 7–6(7–3), 6–4