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 until the fall of the Republic in 1940.
Before the creation of the French Section of the Workers' International (SFIO) in 1905, French socialism was divided between the French Socialist Party (PSF), the Socialist Party of France (PSdF) and the French Workers' Party (POF).
Later, the name was applied to parliamentarians and local politicians who believed they held their legitimacy from voters and thus refused to follow the instructions of party leaders.
A number of those people later joined the Republican-Socialist Party (PRS).