Mikalai Dvornikau (Belarusian: ??????? ?????????? ?????????, Mikalai Mikalaevich Dvornikau Russian: ??????? ?????????? ?????????, Nikolai Nikolaevich Dvornikov) known under the pseudonyms Gerasim, Andrei, Anton, Stanislav Tomashevich, Robert and Petya (7 December 1907, in Gomel – 16 February 1938, in Extremadura) was a Soviet Belarusian political militant, a member of the Communist Party of Western Belarus and the Communist Youth League (Komsomol) of Western Belarus.
He was a participant of the Spanish Civil War, political instructor of the Jose Palafox battalion and commander of the Ukrainian interbrigade company Taras Shevchenko.