The Federated Republic of People's Solar Soviets, abbreviated FRPSS or FSR, and shortened to Soviet Republic, was a Communist state which existed in the Milky Way galaxy from its foundation in the 2400s to its defeat and abolition in the 3270s. Soviet-held or -aligned worlds resided mostly in the middle-belt region of the Orion, Centaurus, Crux, and Carina arms at the spinward-trailing region of the Milky Way galaxy, a densely-populated and densely-colonised region of the galaxy.

The Soviet Republic was founded by a coalition of human, tauran, graal, and other colonists holding collectivist or communist viewpoints. The pre-existing graal space empire joined the Soviets in its entirety, while the taurans fought a war to resist assimilation. Over centuries,

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