Great Britain at the 2012 Summer Olympics 3–1 in the Women's Field hockey tournament to win the first medal of any colour by a British field hockey team at a Summer Olympics since 1992. The team won 65 medals in total; 29 gold, 17 silver and 19 bronze. For each gold medallist, a post box was painted gold by Royal Mail in recognition of the achievement, usually in the competitor's home town. A first class stamp depicting each gold medal winning individual or team was also produced. The following British competitors won medals at the Games. In the 'by discipline' sections below, medallists' names are in bold.
Japan at the 2012 Summer Olympics an Olympic gold medal since 1960, in the men's middleweight division. Defending swimming champion Kosuke Kitajima, who aimed to win gold in two breaststroke events for third Games in succession, missed out on the medal standings in the finals. The following Japanese competitors won medals at the Games. In the by discipline sections below, medalists' names are bolded. Japanese Olympic Committee (JOC) selected a team of 295 athletes, 138 men and 157 women, to compete in all sports except basketball, and handball; it was the nation's fifth-largest team sent to the Olympics, but the smallest since the 2000 Summer Olympics