The Soviet Union had several kinds of country subdivisions:
| Republic | Autonomous republics | Oblasts | Krais | Autonomous oblasts | Autonomous okrugs | |
|---|---|---|---|---|---|---|
| Armenian SSR | ||||||
| Azerbaijan SSR | 1 | 1 | ||||
| Byelorussian SSR | 6 | |||||
| Estonian SSR | ||||||
| Georgian SSR | 2 | 1 | ||||
| Karelo-Finish SSR | ||||||
| Kazakh SSR | 19 | |||||
| Kirghiz SSR | 4–7 | |||||
| Latvian SSR | ||||||
| Lithuanian SSR | ||||||
| Moldavian SSR | 7 | |||||
| Russian SFSR | 16 | 49 | 6 | 5 | 10 | |
| Tajik SSR | 2–3 | 1 | ||||
| Transcaucasian SFSR | 3 | |||||
| Turkmen SSR | 5 | |||||
| Ukrainian SSR | 25 | |||||
| Uzbek SSR | 1 | 12 |