| Name: | Council for Mutual Economic Assistance (COMECON) |
| Foundation date: | 25 January 1949 |
| Headquarters: | Moscow (Soviet Union) |
| Organization dissolved itself: | 28 June 1991 |
|
COMECON flag (unofficial) |
| 25 January 1949 | Bulgaria, Czechoslovakia, Hungary, Poland, Rumania, Soviet Union |
| February 1949 | Albania (inactive since December 1961) |
| 29 September 1950 | German Democratic Republic (membership dissolved 1 October 1990) |
| 7 June 1962 | Mongolia |
| July 1972 | Cuba |
| 1978 | Vietnam |
