Siddhartha Shankar Ray (20 October 1920 – 6 November 2010) was an Indian lawyer, diplomat and Indian National Congress politician from West Bengal. In his political career he held a number of offices, including Union Minister of Education (1971–72), Chief Minister of West Bengal (1972–77), Governor of Punjab (1986–89) and Indian Ambassador to the United States (1992–96). He was at one point the main troubleshooter for the Congress Party.
Ray was born in a Vaidya family. Ray's father, Sudhir Kumar Ray, was a well known barrister of Calcutta High Court and a member of the Indian National Congress and his mother Aparna Devi, was the elder daughter of the barrister and nationalist leader Chittaranjan Das and Basanti Devi grew up in England. Ray's sister is Justice Manjula Bose (1930–2016) who was a senior judge of the Calcutta High Court; along with Padma Khastagir, she was one of the first female judges of the Calcutta High Court. Ray was also related to Sudhi Ranjan Das, a former Chief Justice of India and Satish Ranjan Das, a former Advocate General of Bengal and a Law Member of the Viceroy's Executive Council.
Ray studied at, Mitra Institution, Bhowanipore Branch, Calcutta, Presidency College, Calcutta and University Law College, of the University of Calcutta. In college and university, he was active in both sports and politics. In 1941, he was elected as student Under-Secretary in the Calcutta University Institute Elections and was put in charge from time to time of various departments including Students' Aid Fund, Debates, Sports and Socials. He was also the Debate Secretary and later the General Secretary of the Calcutta University Law College Union. As a sportsman he captained the Presidency College cricket team. He was the captain of the team that won the Inter Collegiate cricket Championship in 1944. He had scored three double centuries and 1000 runs for three consecutive seasons. He was also a keen footballer in Calcutta playing for the Kalighat Club. He was a University Blue in this sport and represented the Calcutta University in inter-varsity matches. In 1939, he was the captain of the victorious Presidency College football team which won both the Elliot and Hardinge Birthday Shields. He was also interested in lawn tennis and table tennis.
Later Ray was called to the bar by the Honourable Society of Inner Temple, London, in 1947. While in London he played cricket for the Indian Gymkhana Club.