| Doubles | |
|---|---|
| 2004 BMW Open | |
| Champions |  James Blake  Mark Merklein |
| Runners-up |  Julian Knowle  Nenad Zimonjić |
| Final score | 6–2, 6–4 |
Wayne Black and Kevin Ullyett were the defending champions but did not compete that year.
James Blake and Mark Merklein won in the final 6–2, 6–4 against Julian Knowle and Nenad Zimonjić.
Jared Palmer / 
Pavel Vízner (semifinals) Julian Knowle / Nenad Zimonjić (final)
Mariusz Fyrstenberg / Marcin Matkowski (first round) Petr Pála / Radek Štěpánek (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | J Palmer P Vízner | 77 | 6 | ||||||||||||||||||||||||
 J Kerr  T Vanhoudt | 64 | 4 | 1 | J Palmer P Vízner | 6 | 6 | |||||||||||||||||||||
 P Srichaphan  M Verkerk | 77 | 6 | P Srichaphan M Verkerk | 4 | 2 | ||||||||||||||||||||||
| ALT |  E Benfele Álvarez  W Moodie | 65 | 4 | 1 | J Palmer P Vízner | 3 | 6 | 2 | |||||||||||||||||||
| 4 | P Pála R Štěpánek | 3 | 3 | J Blake M Merklein | 6 | 1 | 6 | ||||||||||||||||||||
| J Blake M Merklein | 6 | 6 | J Blake M Merklein | w/o | |||||||||||||||||||||||
 K Braasch  S Sargsian | 6 | 77 | K Braasch S Sargsian | ||||||||||||||||||||||||
| WC |  V Voltchkov A Waske | 3 | 63 | J Blake M Merklein | 6 | 6 | |||||||||||||||||||||
 J Johansson T Perry | 2 | 6 | 6 | 2 | J Knowle N Zimonjić | 2 | 4 | ||||||||||||||||||||
V Spadea  M Youzhny | 6 | 3 | 4 | J Johansson T Perry | 6 | 6 | |||||||||||||||||||||
| WC | L Burgsmüller  Y-H Lu | 6 | 6 | WC | L Burgsmüller Y-H Lu | 3 | 4 | ||||||||||||||||||||
| 3 | M Fyrstenberg M Matkowski | 3 | 1 | J Johansson T Perry | 65 | 1 | |||||||||||||||||||||
| T Cibulec D Škoch | 7 | 6 | 2 | J Knowle N Zimonjić | 77 | 6 | |||||||||||||||||||||
 V Hănescu A Pavel | 5 | 2 | T Cibulec D Škoch | 1 | 4 | ||||||||||||||||||||||
 Y Allegro M Kohlmann | 2 | 6 | 61 | 2 | J Knowle N Zimonjić | 6 | 6 | ||||||||||||||||||||
| 2 | J Knowle N Zimonjić | 6 | 3 | 77 | |||||||||||||||||||||||
Jonas Björkman and Todd Woodbridge successfully defended their title for a third year, defeating Julian Knowle and Nenad Zimonjić in the final, 6–1, 6–4, 4–6, 6–4, to win the gentlemen's doubles title at the 2004 Wimbledon Championships With the title Woodbridge broke Laurence and Reginald Doherty's record of eight Wimbledon men's doubles titles.
Arnaud Clément and Michaël Llodra were the defending champions, but lost in the semifinals to Daniel Nestor and Nenad Zimonjić.
Mark Knowles and Daniel Nestor were the defending champions, but did not compete together. Knowles partnered with Mahesh Bhupathi, but lost in the first round to Stephen Huss and Ross Hutchins. Nestor partnered with Nenad Zimonjić, and reached the final before losing to Pablo Cuevas and Luis Horna.
Martin Damm & Leander Paes were the defending champions. They were both present but did not compete together.
Damm partnered with Pavel Vízner, but lost in the first round to Eric Butorac and Andy Murray.
Paes partnered with Paul Hanley, but lost in the quarterfinals to Daniel Nestor and Nenad Zimonjić.
Bob Bryan and Mike Bryan were the defending champions, and won in the final 6–2, 6–2, against Mahesh Bhupathi and Mark Knowles.
Fabrice Santoro and Nenad Zimonjić were the defending champions. They were both present but did not compete together.
Santoro partnered with Richard Gasquet, but lost in the semifinals to Zimonjic and partner Daniel Nestor, who lost in the final.
Bob Bryan and Mike Bryan were the defending champions, but Daniel Nestor and Nenad Zimonjić defeated them 6–4, 5–7, [10–8], in the final.
Mahesh Bhupathi and Nenad Zimonjić were the defending champions, but Zimonjic chose not to participate, and only Bhupathi competed that year.
Bhupathi partnered with Mark Knowles, but Marcelo Melo and André Sá defeated them 7–5, 6–2, in the final.
Rafael Nadal and Tommy Robredo were the defending champions, but Nadal chose not to participate, and only Robredo competed this year.
Robredo partnered with Albert Montañés, but lost in the second round to Lukáš Dlouhý and Leander Paes.
Daniel Nestor and Nenad Zimonjić won in the final 6–4, 6–1, against Bob Bryan and Mike Bryan.
Max Mirnyi and Andy Ram were the defending champions, but they chose not to participate this year.
Łukasz Kubot and Oliver Marach won in the final 2–6, 6–4, [11–9] against Julian Knowle and Jürgen Melzer.
Jonas Björkman & Kevin Ullyett were the defending champions, but Björkman retired in 2008.
Ullyett teamed up with Bruno Soares, but they lost in the second round against František Čermák and Michal Mertiňák.
Daniel Nestor and Nenad Zimonjić won in the final 6–3, 6–4, against Marcel Granollers and Tommy Robredo.
With this win, Nestor completed a Career Golden Masters, having won all nine ATP Tour Masters 1000 events. He was the first player to do so.
Liezel Huber and Bob Bryan were the defending champions, but Bryan chose to not compete this year in mixed doubles.
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.
Leander Paes and Nenad Zimonjić were the defending champions, but they chose not to participate together.
Paes partnered up with Martin Damm, but they were eliminated by Mahesh Bhupathi and Radek Štěpánek in the second round.
Zimonjić played alongside Fabrice Santoro and reached the final, where they lost to Jonas Björkman and Max Mirnyi.
Julian Knowle and Jürgen Melzer were the defending champions.
Julian Knowle and Nenad Zimonjić were the defending champions, but lost in the semifinals this year.
Filip Polášek and Lukáš Rosol were the defending champions but decided not to participate together. Polášek partnered up Julian Knowle, while Rosol decided not to participate.
Christopher Kas and Philipp Kohlschreiber won the title winning against Knowle and Polášek by 7–5, 6–4.
Daniel Nestor and Nenad Zimonjić were the defending champions, but Zimonjić decided to compete in Valencia instead. Nestor played alongside Vasek Pospisil, but lost in the first round to Denis Istomin and Horacio Zeballos.
Treat Huey and Dominic Inglot won the title, defeating Julian Knowle and Oliver Marach in the final, 6–3, 3–6, [10–4].
Jean-Julien Rojer and Horia Tecău are the defending champions, but lost to Vasek Pospisil and Jack Sock in the semifinals.
Marcel Granollers and David Marrero were the defending champions, but Granollers chose not to participate this year. Marrero played alongside Nenad Zimonjić, but lost in the quarterfinals to Elias and Mikael Ymer.