Founding member of the North Atlantic Treaty Organization (1949)
Belgium
Canada
Denmark (including Greenland)
France (including French Guiana. France withdrew from the command on 9 March 1966, retained membership, and NATO headquarters moved from Paris to Brussels, later rejoining on 1 April 2009)
Iceland
Italy
Luxembourg
Netherlands
Norway
Portugal
United Kingdom (including Gibraltar)
United States
Joining countries during the Cold War
February 18, 1952 Greece Turkey
May 9, 1955 West Germany (reunification on 3 October 1990, reunified Germany remains a member of NATO)
30 May 1982 Spain
National editor who joined after the end of the Cold War
March 12, 1999 Czech Republic, Hungary, Poland
29 March 2004 Romania, Estonia, Latvia, Lithuania, Slovakia, Slovenia, Bulgaria
April 1, 2009 Albania Croatia
June 5, 2017 Montenegro
March 27, 2020 North Macedonia
April 4, 2023 Finland#Finland has officially become the 31st member of NATO #
