Yakiv Vasylevich Stefanovych (Ukrainian: Якiв Василевич Стефанович) (10 December (28 November old style) 1854 –14 April 1915) was a Ukrainian narodnik revolutionary.
Stefanovich led an unsuccessful attempt to incite a peasant revolt in Ukraine. He and his colleagues deceived participants by telling them the Russian tsar supported appropriating land from big landowners for the peasants.