Nestor Ivanovych Makhno or simply Bat'ko Makhno (Ukrainian: Нестор Іванович Махно, Russian: Не́стор Ива́нович Махно́; October 26 [O.S. October 14] 1888 – July 6, 1934) was a Ukrainian anarcho-communist guerrilla leader turned army commander who led an independent anarchist army in Ukraine during the Russian Civil War.

A commander of the peasant Revolutionary Insurrectionary Army of Ukraine, also known as the Anarchist Black Army, Makhno led a guerrilla campaign during the Russian Civil War. Makhno fought all factions that sought to impose any external authority over southeastern Ukraine, battling in succession the Ukrainian Nationalists, the Imperial German and Austro-Hungarian occupation, the Hetmanate Republic, the White Army and the Red Army, amongst other smaller competing Ukrainian atamany. Makhno and his movement repeatedly attempted to reorganize life in the Gulai-Polye region along anarchist-communist lines, however, the disruptions of the civil war precluded any long term social experiments. Although Makhno considered the Bolsheviks a threat to the development of an anarchist Free Territory within Ukraine, he twice entered into military alliances with them to defeat the White Army. In the aftermath of the White Army's final defeat in November 1920, the Bolsheviks initiated a military campaign against Makhno, which concluded with his escape across the Romanian border in August 1921. After a series of imprisonments and escapes, Makhno finally settled in Paris with his wife Galina and daughter Yelena. In exile Makhno authored three volumes of memoirs. Makhno died in exile at the age of 45 from tuberculosis-related causes. He is also credited as the inventor of the tachanka, a horse-drawn platform mounting a heavy machine gun.