Vasyl Stepanovych Chuchupak was the leader of the Kholodny Yar Ukrainian partisan movement during the Ukrainian War of Independence.

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.