This is a list of nations, as represented by National Olympic Committees (NOCs), that have participated in the Winter Olympic Games between 1924 and 2022. The Winter Olympic Games have been held every four years (once during each Olympiad) since 1924, except for the cancelled Games of 1940 and 1944, and in 1994 when the Winter Games were moved to the middle of the Olympiad, two years after the previous Games.
129 NOCs (118 of the current 206 NOCs and 11 obsolete NOCs) have participated in at least one Winter Games, and twelve nations (Austria, Canada, Finland, France, Great Britain, Hungary, Italy, Norway, Poland, Sweden, Switzerland, and the United States) have participated in all twenty-three Winter Games to date. Including continuity from Czechoslovakia, the Czech Republic and Slovakia have also been represented in every edition.