National Social Democratic Front
| National Social Democratic Front Mặt trận Quốc gia Dân chủ Xã hội | |
|---|---|
| Leader | Nguyễn Văn Thiệu (honorary) Nguyễn Văn Hiếu (de facto) | 
| Founded | 1967 | 
| Dissolved | 1975 | 
| Merger of | Democratic Progressive Party National Revolutionary Movement National Progressive Movement Alliance of Democratic and Peaceful Forces Vietnamese Nationalist Party Vietnamese Democratic Socialist Party Personalist Labor Revolutionary Party ex-members | 
| Preceded by | Democratic Progressive Party | 
| Headquarters | Saigon | 
| Ideology | Vietnamese nationalism Anti-communism | 
| Political position | Big tent | 
| Colors | Red White Yellow | 
| Slogan | "Freedom—Democracy—Progress—Prosperity" (Tự do—Dân chủ—Tiến bộ—Phú cường) | 
| Party flag | |
The National Social Democratic Front (Vietnamese: Mặt trận Quốc gia Dân chủ Xã hội), later named the Social Democratic Alliance (Vietnamese: Liên minh Dân chủ Xã hội), was a South Vietnamese political party which was effectively a federation of different groups, united by their anti-communist stance. Its chairman was Lt. Gen. Nguyễn Văn Thiệu, leader of South Vietnam from 1965–1975.