I

Idea	Idealism
Idealist conception of History	Identity Politics
Identity, the Law of	Ideology
Ideology (Althusser)	Illusory Being [or Semblance]
Ilyenkov, Evald Vasilyevich (1924-1979)	Immediate knowledge
Imperialism	Impossibilism
In and For Itself	In Itself
Inber, Vera (1890-1972)	Independent Labour Party
Independent Social Democratic Party of Germany	Indian National Congress
Individual	Individualism and Collectivism
Induction	Industrial Workers of the World
Inflation	Inkpin, Albert (1884-1944)
Instrumental Reason and Communicative Reason	Instruments of Labour
Intellectual Property	Inter-District Organisation of United Social-Democrats
International and the War	International Council Correspondence – Living Marxism
International Left Opposition	International Socialism (1958-1978)
International Socialism (London 1958-1978)	International Socialist Bureau (I.S.B.)
International Women's Day (March 8)	International Working Mens Association
Internationale group	Internationalism
Intuition	Intuitionism
Invisible Hand	Iron Curtain
Iskra (Spark)	Italian Socialist Party
Izvestia (News)	Izvestia Soveta Rabochikh Deputatov (Bulletin of the Soviet of Workers' Deputies)
Izvestia Vserossiiskogo Soveta Krestyanskikh (News of the All-Russia Soviet of Peasants' Deputies)