The Praja Socialist Party, abbreviated as PSP, was an Indian political party. It was founded when the Socialist Party, led by Jayaprakash Narayan, Rambriksh Benipuri, Acharya Narendra Deva and Basawon Singh (Sinha), merged with the Kisan Mazdoor Praja Party led by J. B. Kripalani (former president of the Indian National Congress and a close associate of Jawaharlal Nehru).