| Republic | Map of the Union Republics between 1956 and 1991 | |
|---|---|---|
| 1 |  Russian SFSR |
 |
| 2 |  Ukrainian SSR | |
| 3 |  Byelorussian SSR | |
| 4 |  Uzbek SSR | |
| 5 |  Kazakh SSR | |
| 6 |  Georgian SSR | |
| 7 |  Azerbaijan SSR | |
| 8 |  Lithuanian SSR | |
| 9 |  Moldavian SSR | |
| 10 |  Latvian SSR | |
| 11 |  Kirghiz SSR | |
| 12 |  Tajik SSR | |
| 13 |  Armenian SSR | |
| 14 |  Turkmen SSR | |
| 15 |  Estonian SSR | |
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