According to answers.com, 407 athletes competed in 26 sports for China. Click on the 'China at the 2004 Summer Olympics' link below for more information.
11,028 athletes competing in the Beijing Olympics
Iraqi athletes are competing in rowing and athletics at the 2008 Games in Beijing.
There are 708 athletes competing for France at the 2008 Olympic games.
A total of 311 Canadian athletes will be competing in Beijing Olympics 2008.
Saint Lucia sent 4 athletes to compete in athletics and swimming to the 2008 Games in Beijing.
104 athletes are competing in the Olympics games for Brazil 2012
647
more than 10,000 athletes
Germany
204 nations.
463 athletes represented Germany in the 2008 Olympic Games.
In the info i found it said there was 433 Australians competing