The Ligue trotskyste de France is a French Trotskyist group. It is a section of the International Communist League (Fourth Internationalist) or "Spartacist" tendency.
The LTF was founded in the mid 1970s, reportedly after members of the Spartacist League (US) started proslytizating in France. The LTF campaigned against the Union of the Left during the French legislative election, 1978, considering the coalition a popular front. In the 1981 elections it offered the French Communist Party leader Georges Marchais "savagely critical support" if he ran against François Mitterrand. They later condemned him for keeping the PFC in the Union of the Left.
In 1980 the LTF launched a periodical, Le Bolshevik edited by William Cazenove. Through the 1980s the group continued to support the positions of the international Spartacist movement, i.e., opposition to Solidarity, support of the Soviet war in Afghanistan and opposition to Khomeini.