Mudumbai Seshachalu Narasimhan (7 June 1932 – 16 May 2021) was an Indian mathematician. He was known, along with C. S. Seshadri, for their proof of the Narasimhan–Seshadri theorem. He was elected as a member of the Fellows of the Royal Society. He was the only Indian to receive the King Faisal International Prize in the field of science.