2003 Tennis Masters Cup – Doubles

Bob Bryan and Mike Bryan defeated Michaël Llodra and Fabrice Santoro in the final, 6–7(6–8), 6–3, 3–6, 7–6(7–3), 6–4 to win the doubles tennis title at the 2003 Tennis Masters Cup. It was their first Tour Finals title.

Ellis Ferreira and Rick Leach were the reigning champions, but did not compete that year.

Seeds
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.

• # 🇺🇸 Bob Bryan / 🇺🇸 Mike Bryan (champions)

• # 🇮🇳 Mahesh Bhupathi / 🇧🇾 Max Mirnyi (round robin)

• # 🇸🇪 Jonas Björkman / 🇦🇺 Todd Woodbridge (round robin)

• # Mark Knowles / 🇨🇦 Daniel Nestor (semifinals)

• # 🇦🇺 Wayne Arthurs / 🇦🇺 Paul Hanley (round robin)

• # 🇫🇷 Michaël Llodra / 🇫🇷 Fabrice Santoro (final)

• # 🇨🇿 Martin Damm / 🇨🇿 Cyril Suk (round robin)

• # 🇦🇷 Gastón Etlis / 🇦🇷 Martín Rodríguez (semifinals)

Red group
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.''

Blue group
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.''