Kholodny Yar Republic was a self-proclaimed state formation, partisan movement, which ran on part of the lands of the former Ukrainian People's Republic, in the Chyhyryn district of the Kyiv province, in the area of the Kholodny Yar forest tract. The village of Melnyky was its capital. It had a 15,000-strong army composed of peasants and soldiers from the UNR army, which was defeated by the White Army in Podolia earlier.

The Ukrainian War of Independence, also referred to as the Ukrainian–Soviet War in Ukraine, lasted from March 1917 to November 1921. It saw the establishment and development of an independent Ukrainian republic, most of which was absorbed into the Ukrainian Soviet Socialist Republic between 1919 and 1920. The Ukrainian Soviet Socialist Republic was one of the constituent republics of the Soviet Union between 1922 and 1991.