| Conventional Long Name: | Yakut Autonomous Soviet Socialist Republic |
| Native Name: | |
| Common Name: | Yakut ASSR |
| Subdivision: | ASSR |
| Nation: | the Russian SFSR |
| P1: | Yakutsk Oblast |
| Flag P1: | Flag of Russia.svg |
| S1: | Sakha Republic |
| Flag S1: | Flag of Sakha.svg |
| Flag Type: | Flag (1978–1991) |
| Image Map Caption: | Map of Yakut ASSR (Green) within USSR (Dark Grey) |
| Capital: | Yakutsk |
| Start: | 1922 |
| End: | 1991 |
The Yakut Autonomous Soviet Socialist Republic (ru|Якутская Автономная Советская Социалистическая Республика|Yakutskaya Avtonomnaya Sovetskaya Sotsialisticheskaya Respublika; sah|Саха автономнай сэбиэскэй социалистическэй республиката|Saxa avtonomnay sebieskey sotsialistiçeskey respublikata), also known as Soviet Sakha, Soviet Yakutia or the Yakut ASSR (ru|Якутская АССР|links=no, Yakutskaya ASSR), was an autonomous republic of the Russian SFSR within the Soviet Union.[1]
It was created on 27 April 1922, during the Yakut revolt, and was transformed into the Sakha Republic in 1991.