The Independent Socialists (French: Socialistes indépendants, SI) were a French political movement and, at times, parliamentary group in the Chamber of Deputies of France during the French Third Republic. The movement was strong from 1880 till the fall of the Republic in 1940. In the end, following the creation of the SFIO, the name was used to refer to those who did not wish to join the SFIO. A number of those people later joined the Republican-Socialist Party (PRS).