The Viet Nam Democratic Socialist Party (Vietnamese: Đảng Dân chủ Xã hội Việt Nam) was a political party in South Vietnam. It was founded in 1944 by Huỳnh Phú Sổ, the founder of Hòa Hảo. The party was formed through the unity of a sector of socialist-minded people in Saigon and some provincial sect leaders. The party was persecuted by the Việt Minh. Huỳnh Phú Sổ was killed by the Việt Minh in 1947, after which the party was dissolved. In February 1955, General Nguyễn Giác Ngộ of Hòa Hảo claimed that the party had been revived. The party obtained three seats in the 1959 National Assembly election.
- Trager, Frank N (ed.). Marxism in Southeast Asia; A Study of Four Countries. Stanford, Calif: Stanford University Press, 1959. p. 169
- Rose, Saul. Socialism in Southern Asia. London: Oxford University Press, 1959. p. 197
- Goodman, Allan E. Politics in War; The Bases of Political Community in South Vietnam. Cambridge, Mass: Harvard University Press, 1973. p. 25