Polish 5th Siberian Rifle Division was a Polish military unit formed in 1919 in Russia during the aftermath of World War I. The division fought during the Polish-Soviet War, but as it was attached to the White Russian formations, it is considered to have fought more in the Russian Civil War. Its tradition was continued in the Polish Army as the 30th Infantry Division.

The Russian Civil War was a multi-party civil war in the former Russian Empire sparked by the overthrowing of the social-democratic Russian Provisional Government in the October Revolution, as many factions vied to determine Russia's political future. It resulted in the formation of the Russian Socialist Federative Soviet Republic and later the Soviet Union in most of its territory. Its finale marked the end of the Russian Revolution, which was one of the key events of the 20th century.