Nicholas Ian Shepherd-Barron is a British mathematician working in algebraic geometry. He is professor of mathematics at Cambridge University and a Fellow of Trinity College, Cambridge. He obtained his Ph.D. at the University of Warwick in 1981 under the supervision of Miles Reid. He worked initially in the area of birational geometry and Mori theory. He was elected Fellow of the Royal Society in 2006. His work has had a major impact on modern work on classification of higher dimensional varieties. He is the son of John Shepherd-Barron, a Scottish inventor.
