Udupi Ramachandra Rao (10 March 1932 – 24 July 2017) was an Indian space scientist and former chairman of the Indian Space Research Organisation. He was also the Chairman of the Governing Council of the Physical Research Laboratory at Ahmedabad and Nehru Planetarium at Bengaluru and chancellor of the Indian Institute for Space Science and Technology (IIST) at Thiruvananthapuram. He is known as "The Satellite Man of India". He pioneered India's first satellite launch Aryabhata in 1975.