| Socialist Party of France | |
| Native Name: | Parti socialiste de France |
| Colorcode: | Red |
| Leader1 Title: | Leader |
| Leader1 Name: | Jules Guesde |
| Merger: | Socialist Revolutionary Party French Workers' Party |
| Merged: | French Section of the Workers' International |
| Headquarters: | Paris, France |
| Ideology: | Socialism Anti-capitalism |
| Position: | Left-wing |
| Colours: | Red |
| Country: | France |
The Socialist Party of France (French: Parti socialiste de France) was a socialist political party.
The party was founded in 1902 during a congress in Commentry by the merger of the Marxist French Workers' Party led by Jules Guesde and the Blanquist Socialist Revolutionary Party of Édouard Vaillant.
Unlike the French Socialist Party of Jean Jaurès, it refused to support bourgeois governments and so to take part in the Bloc des gauches coalition.
However, the two parties merged in 1905 under the pressure of the Second International into the French Section of the Workers' International.