Ainu Revolution Theory (Japanese: アイヌ革命論, Ainu Kakumeiron) is a left-wing political idea in Japan that was active in the 1970s. It was a variant of Proletarian Revolution Theory that came to light shortly after the revision of the Treaty of Mutual Cooperation and Security Between the United States and Japan, focusing on the Ainu. The actions and writings of Japanese left-wing thinker Ota Ryu in particular made Ainu Revolution Theory well known.