This was the 13th appearance of men's doubles tennis. The event has been held at every Summer Olympics where tennis has been on the program: from 1896 to 1924 and then from 1988 to the current program. A demonstration event was held in 1968. The American pair of the
Bryan brothers,
Bob Bryan and
Mike Bryan, were the top seed in 2004 but had exited in the quarterfinals. They were again the number one seed in Beijing. The 2004 gold winning pair of
Fernando González and
Nicolás Massú returned, as did German silver medalists
Nicolas Kiefer and
Rainer Schüttler and Indian fourth-place finishers
Mahesh Bhupathi and
Leander Paes. 2000 gold medalist
Daniel Nestor of Canada competed once again with his 2004 partner,
Frédéric Niemeyer. Each of the
Big Four competed, but expectations of them in the doubles were not particularly high. Serbia made its debut in the event. France and Great Britain each made their 10th appearance in the event, tied for most of all nations. ==Qualification==