I

Idea	Idealism
Idealist conception of History	Identity Politics
Identity, the Law of	Ideology
Ideology (Althusser)	Il-sung, Kim (1912-1994)
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)