Juan Martín del Potro and Travis Parrott were the defending champions, but chose not to participate that year.
Jordan Kerr and Robert Lindstedt were the defending champions, but lost in the semifinals to Mikhail Youzhny and Mischa Zverev.
Luis Horna and Juan Mónaco were the defending champions, but Horna chose not to participate, and only Mónaco competed that year.
Mónaco partnered with Agustín Calleri, but lost in the quarterfinals to Paul Hanley and Jordan Kerr.
František Čermák and Leoš Friedl were the defending champions, but did not participate this year.
Paul Hanley and Jordan Kerr were the defending champions, but lost in the quarterfinals to Philipp Petzschner and Alexander Peya.
Ernests Gulbis and Rainer Schüttler were the defending champions, but chose not to participate that year.
Michael Berrer and Rainer Schüttler were the defending champions, but chose not to participate this year.
Daniel Nestor and Nenad Zimonjić successfully defended their title, defeating Bob and Mike Bryan in the final, 7–6(9–7), 6–7(3–7), 7–6(7–3), 6–3, to win the gentlemen's doubles title at the 2009 Wimbledon Championships.
Mardy Fish and John Isner were the defending champions, but neither participated this year.
Ashley Fisher and Tripp Phillips were the defending champions, but Phillips chose not to participate, and only Fisher competed that year.
Fisher partnered with Jordan Kerr, but lost in the final to Ernests Gulbis and Dmitry Tursunov, 6–4, 3–6, [11–9].
Bob Bryan and Mike Bryan were the defending champions, but lost in the semifinals against Lukáš Dlouhý and Leander Paes.
Martin Damm and Robert Lindstedt were the defending champions. Both are present, but chose not compete together this year.
Damm partnered up with Filip Polášek, but they lost in the semifinals 6–7(4–7), 4–6, against Jürgen Melzer and Philipp Petzschner.
Lindstedt partnered up with Julian Knowle, but they lost 3–6, 6–7(6–8), against Christopher Kas and Evgeny Korolev in the first round.
Jürgen Melzer and Philipp Petzschner won this tournament, after won in the final 3–6, 6–3, [10–8], against Arnaud Clément and Olivier Rochus.
John McEnroe and Jonas Björkman won in the final 7–6(7–2), 4–6, 10–7, against Paul Goldstein and Jim Thomas.
The 2006 Thailand Open was a tennis tournament played on indoor hard courts. It was the 4th edition of the Thailand Open, and was part of the International Series of the 2006 ATP Tour. It took place at the Impact Arena in Bangkok, Thailand, from September 25 through October 1, 2006. Jonathan Erlich and Andy Ram won in the final 6–2, 2–6, [10–4] against Andy Murray and Jamie Murray.
Jordan Kerr and Jim Thomas were the defending champions, but lost in the first round this year.
Daniele Bracciali and Potito Starace were the defending champions, but they lost in the first round to Paul Hanley and Jordan Kerr.
Robert Lindstedt and Horia Tecău won the final over Jérémy Chardy and Łukasz Kubot, 7–6(7–2), 6–3.
Lucas Arnold and Paul Hanley were the defending champions, but did not participate together this year. Arnold partnered Martín García, losing in the semifinals. Hanley partnered Jim Thomas, winning the title.
Justin Gimelstob and Graydon Oliver were the defending champions, but Oliver did not participate this year. Gimelstob partnered Nathan Healey and successfully defended his title.
Jonathan Erlich and Andy Ram were the defending champions.
The men's doubles of the 2006 ECM Prague Open tournament was played on clay in Prague, Czech Republic.
Jordan Kerr 
Robert Lindstedt 
Frank Dancevic 
