William David MacAskill (born 24 March 1987 as William David Crouch) is a Scottish philosopher. He is an Associate Professor of Philosophy at the University of Oxford, a Senior Research Fellow at the Global Priorities Institute and the Director and Founder of the Forethought Foundation for Global Priorities Research. MacAskill is also the author of Doing Good Better and the co-founder of Giving What We Can, 80,000 Hours and the Centre for Effective Altruism.
MacAskill, William (2015) Doing Good Better: How Effective Altruism Can Help You Make a Difference, New York: Random House.
MacAskill, William & Darius Meissner (2020) Introduction to Utilitarianism: An Online Textbook, Oxford.
MacAskill, William, Krister Bykvist & Toby Ord (2020) Moral Uncertainty, Oxford: Oxford University Press.
William MacAskill. Official website.