Samar Sen (10 August 1914 – 16 February 2003) was an Indian diplomat who served as the 1st permanent representative of India to the United Nations, Geneva, 8th in New York and the 2nd high commissioner of India to Bangladesh from June 1974 to November 1976. Born in Dhaka, British India (in modern-day Dhaka, Bangladesh), Sen obtained his education from the University of Calcutta, the University of London, Oxford, and Lincoln's Inn. He was a civil services officer who served as a president of the United Nations Security Council from 1972 to 73.