Mari Autonomous Oblastball was an Autonomous Oblast of the 
Soviet Unionball.
| Union of Soviet Socialist Republics: Lаnd оf
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| Principal republics |  Armenian SSRball •  Azerbaijan SSRball •  Byelorussian SSRball • -icon.png){kind=icon} Georgian SSRball • .png){kind=icon} Kazakh SSRbrick • .png){kind=icon} Kirghiz SSRball •  Russian SFSRball •  Tajik SSRball •  Turkmen SSRball •  Ukrainian SSRball • .png){kind=icon} Uzbek SSRball
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| Post-World War II |  Estonian SSRball •  Latvian SSRball •  Lithuanian SSRball •  Moldavian SSRball •  Bulgarian SSRball •  Polish SSRball  Russian Antarcticaball
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| Short-lived |  Karelo-Finnish SSRball •  Transcaucasian SFSRball
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| Not union republics |  SSR Abkhaziaball •  Bukharan PSRball •  Khorezm SSRball •  Pridnestrovian Moldavian SSRball
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| And Lenin is young once again, and young October is ahead! | |
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