The middleweight was one of five boxing weight classes contested on the boxing at the 1908 Summer Olympics programme. Like all other boxing events, it was open only to men. The boxing competitions were all held on October 27. The middleweight was the second-heaviest class, allowing boxers of up to 158 pounds (71.7 kg). It was the only boxing event in which a non-British boxer won a bout. Reginald Baker from Australia (competing on the Australasia team) won three before losing to Johnny Douglas in the final. Ten boxers from three nations competed. Each NOC could enter up to 12 boxers. Australasia entered 1 boxer; France entered 5 boxers, 2 of whom withdrew; and Great Britain entered 6 boxers.