Sir Niall Campbell Ferguson FRSE is a Scottish–American historian who is the Milbank Family Senior Fellow at the Hoover Institution and a senior fellow at the Belfer Center for Science and International Affairs at Harvard University. Previously, he was a professor at Harvard University, the London School of Economics, New York University, a visiting professor at the New College of the Humanities, and a senior research fellow at Jesus College, Oxford. He was a visiting lecturer at the London School of Economics for the 2023/24 academic year and at Tsinghua University, China in 2019–20. He is a co-founder of the University of Austin, Texas.