Trotskyism is the political ideology and branch of Marxism developed by Russian revolutionary and intellectual Leon Trotsky along with some other members of the Left Opposition and the Fourth International. Trotsky described himself as an orthodox Marxist, a revolutionary Marxist, and a Bolshevik–Leninist as well as a follower of Karl Marx, Frederick Engels, Vladimir Lenin, Karl Liebknecht, and Rosa Luxemburg. His relations with Lenin have been a source of intense historical debate. However, on balance, scholarly opinion among a range of prominent historians and political scientists such as E.H. Carr, Isaac Deutscher, Moshe Lewin, Ronald Suny, Richard B. Day and W. Bruce Lincoln was that Lenin’s desired “heir” would have been a collective responsibility in which Trotsky was placed in "an important role and within which Stalin would be dramatically demoted ".
The Fourth International (FI) was a political international established in France in 1938 by Leon Trotsky and his supporters, having been expelled from the Soviet Union and the Communist International.
The International Workers League (Fourth International) (Spanish: Liga Internacional de los Trabajadores (Cuarta Internacional), or LITci; Portuguese: Liga Internacional dos Trabalhadores - Quarta Internacional, or LIT-QI), also known as IWLfi, is a Morenist Trotskyist international organisation.
Homero Rómulo Cristalli Frasnelli, better known under the pseudonym J. Posadas or sometimes Juan Posadas, was an Argentine Trotskyist whose personal vision is usually described as Posadism. Originally a collective pen name of the leadership of the Grupo Cuarta Internacional in Argentina in the 1940s, it was also used by Dante Minazzoli initially.
The League for Socialist Action (LSA) was the premier Trotskyist organization in Canada for much of the 20th century. Throughout its history the LSA went through many different names and iterations. In chronological order it was known as: the International Left Opposition (Trotskyist) of Canada, the Workers Party of Canada, the Socialist Policy Group, the Socialist Workers League, the Revolutionary Workers Party, The Club, the Socialist Education League, and the League for Socialist Action.
Timothy Andrew Wohlforth, was a United States Trotskyist leader. On leaving the Trotskyist movement he became a writer of crime fiction and of politically oriented non-fiction.
John Gordon Michael Lawrence was a leading far-left activist in a wide variety of groups in Britain.
Michel Varga was a Hungarian and French Trotskyist activist.
The Spartacist League/U.S. is a Trotskyist political grouping which is the United States section of the International Communist League, formerly the International Spartacist Tendency. This Spartacist League named themselves after the original Spartacus League of Weimar Republic in Germany, but has no formal descent from it. The League self-identifies as a "revolutionary communist" organization.
The International Committee of the Fourth International (ICFI) is a public faction of the Fourth International founded in 1953. Today, two Trotskyist internationals claim to be the continuations of the ICFI; one with sections named Socialist Equality Party which publishes the World Socialist Web Site, and another linked to the Workers Revolutionary Party in the UK.
The Socialist Equality Party (SEP) is a Trotskyist political party in the United States. SEP first formed in 1964 as the American Committee for the Fourth International, created by expelled members of the Socialist Workers Party. SEP and its previous forms were associated with the International Committee of the Fourth International (ICFI), a Trotskyist political international.
The Fourth International (FI), founded in 1938, is a Trotskyist international.
The International Communist League (Fourth Internationalist) abbreviated as ICL(FI), earlier known as the international Spartacist tendency (iSt) is a Trotskyist international. Its largest constituent party is the Spartacist League (US). There are smaller sections of the ICL (FI) in Mexico, Canada, France, Germany, Ireland, Italy, Japan, South Africa, Australia, Greece and the United Kingdom.
The Workers Revolutionary Party (WRP) is a Trotskyist group in Britain once led by Gerry Healy. In the mid-1980s, it split into several smaller groups, one of which retains possession of the name.
Michel Pablo was the pseudonym of Michalis N. Raptis, a Trotskyist leader of Greek origin.
The first Revolutionary Socialist League (RSL) was formed in early 1938 by the merger of the Marxist League led by Harry Wicks and the Marxist Group led by C. L. R. James.
Pierre Lambert was a French Trotskyist leader, who for many years acted as the central leader of the French Courant Communiste Internationaliste (CCI) which founded the Parti des Travailleurs.
Orthodox Trotskyism is a branch of Trotskyism which aims to adhere more closely to the philosophy, methods and positions of Leon Trotsky and the early Fourth International, Vladimir Lenin and Karl Marx than other avowed Trotskyists.
Michael Banda, born Michael Alexander Van Der Poorten, was a Sri Lankan communist activist best known as the General Secretary of the British Workers Revolutionary Party.
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