Tom O'Lincoln is an United States born Marxist historian, author and one of the founders of the International Socialist Tendency in Australia. He attended UC Berkeley in 1966 and joined the International Socialists who had participated in the Free Speech Movement two years earlier. He has produced first-hand accounts of the 1974-5 revolution in Portugal, the Sandinistas in Nicaragua, the Philippines after the downfall of Ferdinand Marcos, the USSR under Mikhail Gorbachev, and the upheavals against Suharto in Indonesia. He is currently a member of the Trotskyist organisation Socialist Alternative, as well as its electoral alliance party Victorian Socialists, and an editor of the online journal "Marxist Interventions".