The State of Buryat-Mongolia was a buffer Buryat-Mongolian state, during the Russian Civil War. The main government body was Burnatskom, the Buryat National Committee.

The state de facto ceased to exist after the formation of the Far Eastern Republic, which divided Buryat-Mongolia in two: 4 aimags became part of the Far Eastern Republic, while the other 4 formed Buryat-Mongol autonomies of RSFSR.