Đinh Xuân Quảng (May 10, 1909 – February 17, 1971) was a Vietnamese judge and a politician who helped institute a new constitution for South Vietnam. Đinh Xuân Quảng was one of the main advocates of the “Nationalist solution” in the efforts to regain independence from France after World War II – an independence which could ultimately be settled through negotiations and peaceful means. He participated throughout this resolution process and negotiated various agreements with France. His efforts led to the abrogation of the Patenotre Treaty in 1884 which had placed Vietnam under a protectorate of France.