List of Member states of North Atlantic Treaty Organization (NATO). NATO is a North Atlantic Alliance that consists of 28 independent member countries.
Member states of NATO
| Join Date | Country | Enlargement |
|---|
| 4 April 1949 | Belgium | Founders |
| 4 April 1949 | Canada | Founders |
| 4 April 1949 | Denmark | Founders |
| 4 April 1949 | France | Founders |
| 4 April 1949 | Iceland | Founders |
| 4 April 1949 | Italy | Founders |
| 4 April 1949 | Luxembourg | Founders |
| 4 April 1949 | Netherlands | Founders |
| 4 April 1949 | Norway | Founders |
| 4 April 1949 | Portugal | Founders |
| 4 April 1949 | United Kingdom | Founders |
| 4 April 1949 | United States | Founders |
| 18 February 1952 | Greece | First |
| 18 February 1952 | Turkey | First |
| 9 May 1955 | Germany | Second |
| 30 May 1982 | Spain | Third |
| 12 March 1999 | Czech Republic | Fourth |
| 12 March 1999 | Hungary | Fourth |
| 12 March 1999 | Poland | Fourth |
| 29 March 2004 | Bulgaria | Fifth |
| 29 March 2004 | Estonia | Fifth |
| 29 March 2004 | Latvia | Fifth |
| 29 March 2004 | Lithuania | Fifth |
| 29 March 2004 | Romania | Fifth |
| 29 March 2004 | Slovakia | Fifth |
| 29 March 2004 | Slovenia | Fifth |
| 1 April 2009 | Albania | Sixth |
| 1 April 2009 | Croatia | Sixth |
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