List of left-wing internationals
This is a list of socialist, communist and anarchist internationals.
- Communist League, created in 1847 from the League of the Just.
- International Workingmen's Association (First International)
- Socialist International (Second International), a collection of moderate leftist political parties.
- Comintern (Third International), created in 1917 at the behest of the Communist Party of the Soviet Union.
- Fourth International, created in 1938 by Leon Trotsky.
- International Federation of Anarchists (anarcho-communist)
- International Leninist Current (Leninist)
- International Workers Association (anarcho-syndicalist)
- World Socialist Movement (Marxist, anti-Leninist)