Norwegian athletes have won a total of 148 medals at the Summer Olympics, with sailing and shooting as the top medal-producing sports. At the Winter Olympic Games, Norway has won 329 medals (118 gold) — by considerable margin more than any other nation — with cross-country skiing and speed skating as the top sports. Norway is one of only three nations (along with Austria and Liechtenstein) to have won more medals at the Winter Games than at the Summer Games.
The International Olympic Committee considers Norwegian-American wrestlers Charles Ericksen and Bernhoff Hansen to have competed for the United States; each won a gold medal. In 2012, Norwegian historians however found documentation showing that Ericksen did not receive American citizenship until March 22, 1905, and that Hansen, who was registered as an "alien" as late as 1925, probably never received American citizenship. The historians have therefore petitioned to have the athletes registered as Norwegians. In May 2013 it was reported that the Norwegian Olympic Committee had filed a formal application for changing the nationality of the wrestlers in IOC's medal database.