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 What We Owe the Future, and the co-founder of Giving What We Can, 80,000 Hours and the Centre for Effective Altruism.

Further reading

Galef, Julia (2017) Moral uncertainty (Will MacAskill), Rationally Speaking, April 2.

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.

Perry, Lucas (2018) AI alignment podcast: moral uncertainty and the path to AI alignment with William MacAskill, AI Alignment podcast, September 17.
Interview with William MacAskill about moral uncertainty and other topics.

Wiblin, Robert & Keiran Harris (2018) Our descendants will probably see us as moral monsters. what should we do about that?, 80,000 Hours, January 19.
Interview with William MacAskill about the long reflection and other topics.

William MacAskill. Official website.

William MacAskill. Effective Altruism Forum account.