User:59abcd
- Flag of the SSR of Abkhazia 1921–31)
- Flag of the Bukharan PSR (1920–25)
- Flag of the Khorezm PSR (1920–25)
- Flag of the Moldavian ASSR (1925–40)
- Flag of the Tajik ASSR (1924–29)
- Transcaucasian SFSR (1922–36)
- Flag of Transnistria (1990/92–present)
- Flag of Turkestan ASSR]]
- Flag of the Russian SFSR
- Flag of the Ukrainian Soviet Socialist Republic
- Flag of the Byelorussian Soviet Socialist Republic
- Flag of the Uzbek Soviet Socialist Republic
- Flag of the Kazakh Soviet Socialist Republic
- Flag of the Georgian Soviet Socialist Republic
- Flag of the Azerbaijan Soviet Socialist Republic
- Flag of the Lithuanian Soviet Socialist Republic
- Flag of the Moldavian Soviet Socialist Republic
- Flag of Pridnestrovian Moldavian Republic
- Flag of the Latvian Soviet Socialist Republic
- Flag of the Kirghiz Soviet Socialist Republic
- Flag of the Tajik Soviet Socialist Republic
- Flag of the Armenian Soviet Socialist Republic
- Flag of the Turkmen Soviet Socialist Republic
- Flag of the Estonian Soviet Socialist Republic
- Flag of the Karelo-Finnish Soviet Socialist Republic