You can help expand this article with text translated from the corresponding article in French. (April 2016)Click [show] for important translation instructions. View a machine-translated version of the French article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing French Wikipedia article at [[:fr:Parti radical-socialiste Camille Pelletan]]; see its history for attribution. You may also add the template {{Translated|fr|Parti radical-socialiste Camille Pelletan}} to the talk page. For more guidance, see Wikipedia:Translation.

The Radical-Socialist Party Camille Pelletan (French: Parti radical-socialiste Camille Pelletan, PRS-CP) was a social liberal party in France founded in 1934 at the Clermont-Ferrand Congress of the Radical-Socialist Party as a reaction to the participation of Radicals in the right-wing Gaston Doumergue cabinet. The PRS-CP was led by Gabriel Cudenet but never achieved any lasting success. In fact, only 3 parliamentarians identified with the PRS-CP in the 16th legislature (1936–1940). Most members rejoined the Radical Party post-war.

The PRS-CP, initially intended to bring together the left wing of the radical family, did not achieve the hoped-for success, and its leaders rejoined the "old" Radical Party after the Liberation. Gabriel Cudenet moved to the right and became president of the Rally of the Republican Left until his death in 1948.