In men's international ice hockey, the Big Six is a group comprising the six national teams that have dominated play throughout the history of international ice hockey, especially since the 1950s. It has traditionally been composed of the North American countries of Canada and the United States and four European countries: Czechia, Finland, Russia, and Sweden. During the Cold War and for two years afterwards, the Soviet Union/CIS and Czechoslovakia held the places of Russia and Czechia, respectively, within the group. The four European members are sometimes referred to as the "European Big Four" or "Big Four", especially to distinguish them from the North American teams.
As of 2025, out of the 264 Ice Hockey World Championships medals awarded by the International Ice Hockey Federation (IIHF), 234 have been won by the Big Six teams. Since 1954, only ten medals have been won by teams outside the Big Six (four by Slovakia, four by Switzerland, and one each by Germany and Latvia). Of the 75 Olympic ice hockey medals awarded, 67 have been won by a Big Six team.
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