| Doubles | |
|---|---|
| 2003 CA-TennisTrophy | |
| Champions |  Yves Allegro Roger Federer |
| Runners-up |  Mahesh Bhupathi  Max Mirnyi |
| Score | 7–6(9–7), 7–5 |
| Draw | 16 |
| Seeds | 4 |
Joshua Eagle and Sandon Stolle were the defending champions but did not compete that year.
Yves Allegro and Roger Federer won in the final 7–6(9–7), 7–5 against Mahesh Bhupathi and Max Mirnyi.
Jonas Björkman / 
Todd Woodbridge (first round) Mahesh Bhupathi / Max Mirnyi (final)
Martin Damm / Cyril Suk (first round)
Jared Palmer / David Rikl (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | J Björkman T Woodbridge | 4 | 4 | ||||||||||||||||||||||||
| WC |  S Koubek J Melzer | 6 | 6 | WC | S Koubek J Melzer | w/o | |||||||||||||||||||||
 A Costa  J van Lottum | 4 | 4 |  F González T Robredo | ||||||||||||||||||||||||
| F González T Robredo | 6 | 6 | WC | S Koubek J Melzer | 3 | 2 | |||||||||||||||||||||
| 3 | M Damm C Suk | 5 | 3 | Y Allegro R Federer | 6 | 6 | |||||||||||||||||||||
| Y Allegro R Federer | 7 | 6 | Y Allegro R Federer | 6 | 6 | ||||||||||||||||||||||
 J I Chela N Massú | 5 | 2 |  J Coetzee C Haggard | 3 | 4 | ||||||||||||||||||||||
| J Coetzee C Haggard | 7 | 6 | Y Allegro R Federer | 79 | 7 | ||||||||||||||||||||||
 J Nieminen  S Sargsian | 4 | 6 | 4 | 2 | M Bhupathi M Mirnyi | 67 | 5 | ||||||||||||||||||||
| WC | J Knowle A Peya | 6 | 4 | 6 | WC | J Knowle A Peya | 64 | 65 | |||||||||||||||||||
| L Arnold M Hood | 6 | 6 | L Arnold M Hood | 77 | 77 | ||||||||||||||||||||||
| 4 | J Palmer D Rikl | 3 | 0 | L Arnold M Hood | 3 | 77 | 1 | ||||||||||||||||||||
| J Blake G Oliver | 4 | 6 | 6 | 2 | M Bhupathi M Mirnyi | 6 | 62 | 6 | |||||||||||||||||||
D Bowen  N Kiefer | 6 | 4 | 2 | J Blake G Oliver | 3 | 4 | |||||||||||||||||||||
| J Novák P Pála | 3 | 2 | 2 | M Bhupathi M Mirnyi | 6 | 6 | |||||||||||||||||||||
| 2 | M Bhupathi M Mirnyi | 6 | 6 | ||||||||||||||||||||||||
Eric Butorac and Jamie Murray were the defending champions. They were both present but did not compete together.
Butorac partnered with Todd Perry, but lost in the first round to Scott Lipsky and David Martin.
Murray partnered with Max Mirnyi, but lost in the first round to Thomas Johansson and Robert Lindstedt.
Bob Bryan and Mike Bryan were the defending champions but lost in the first round to Christophe Rochus and Olivier Rochus.
Wayne Black and Kevin Ullyett were the defending champions but lost in the second round to Xavier Malisse and André Sá.
Daniel Nestor and Nenad Zimonjić were the defending champions, but lost in the semifinals to Mahesh Bhupathi and Mark Knowles.
Max Mirnyi and Andy Ram were the defending champions. Both were present, but chose not to compete together this year.
Ram partnered with Michaël Llodra, but they lost to Feliciano López and Fernando Verdasco in the first round.
Mirnyi partnered with Mahesh Bhupathi, reaching the final, where they were defeated by Lukáš Dlouhý and Leander Paes.
Lleyton Hewitt and Sandon Stolle were the defending champions but only Stolle competed that year with Max Mirnyi.
Mahesh Bhupathi and Leander Paes were the defending champions but they competed with different partners that year, Bhupathi with Max Mirnyi and Paes with Michael Hill.
Mark Knowles and Brian MacPhie were the defending champions but they competed with different partners that year, Knowles with Daniel Nestor and MacPhie with Nenad Zimonjić.
Karsten Braasch and Andrei Olhovskiy were the defending champions but did not compete that year.
The 2003 Hamburg Masters doubles was a German tennis event.
Roger Federer and Max Mirnyi were the defending champions but only Mirnyi competed that year with Mahesh Bhupathi.
Daniel Nestor and Nenad Zimonjić were the defending champions, but they lost to František Čermák and Michal Mertiňák 7–5, 6–2 in the first round.
Bob Bryan and Mike Bryan won in the final against Mahesh Bhupathi and Max Mirnyi, 6–3, 6–4.
Daniel Nestor and Nenad Zimonjić were the defending champions, but lost to Mahesh Bhupathi and Max Mirnyi in the quarterfinals.
Bhupathi and Mirnyi won this tournament, by defeating Mark Knowles and Andy Ram 7–5, 7–5 in the final.
František Čermák and Michal Mertiňák were the defending champions, however they lost to Mahesh Bhupathi and Max Mirnyi in the quarterfinals.
British wildcard pair Andy and Jamie Murray won the title, defeating Bhupathi and Mirnyi 7–6(10–8), 5–7, [10–7] in the final.
Lukáš Dlouhý and Leander Paes were the defending champions, but chose not to participate together.
Dlouhý competed together with Paul Hanley, however they lost to Jürgen Melzer and Philipp Petzschner in the second round.
Paes partnered up with Mahesh Bhupathi and they won this tournament, defeating Max Mirnyi and Daniel Nestor 6–7(5), 6–2, [10–5] in the final.
Mahesh Bhupathi and Leander Paes were the defending champions, but this year Bhupathi played with Rohan Bopanna and Paes, who also won the tournament in 2010, played with Radek Štěpánek.
Bhupathi and Bopanna were defeated in the semifinals by Max Mirnyi and Daniel Nestor, who were then defeated in the final by Paes and Štěpánek 3–6, 6–1, [10–8].
Mahesh Bhupathi and Leander Paes were the defending champions. They successfully defended their title, defeating Olivier Delaître and Max Mirnyi in the final 6–7, 6–3, 6–2.
Max Mirnyi and Daniel Nestor were the defending champions but were beaten in the Quarterfinals by Mahesh Bhupathi and Rohan Bopanna.
Leander Paes and Radek Štěpánek won the title, beating Bhupathi and Bopanna in the final by the score of 6–7(7–9), 6–3, [10–5].
Mahesh Bhupathi and Max Mirnyi were the defending champions, but lost in the quarterfinals to Michaël Llodra and Fabrice Santoro.
Mahesh Bhupathi and Max Mirnyi defeated defending champions Wayne Arthurs and Paul Hanley 2–6, 6–3, 6–4 in the final. It was the 34th title for Bhupathi and the 20th title for Mirnyi in their respective careers.