Alan Brian Carter (born 1952, Lincolnshire, England) is Emeritus Professor of Moral Philosophy at the University of Glasgow.

Carter earned a BA at the University of Kent at Canterbury, a MA at the University of Sussex and a DPhil at St Cross College at the University of Oxford. Carter's first academic position was Lecturer in Political Theory at University College Dublin. He then became Head of the Philosophy Department at Heythrop College, University of London. Subsequently, he was Professor of Philosophy and Environmental Studies at the University of Colorado at Boulder. He has been a Visiting Professor at the University of British Columbia and at the University of Bucharest. For a number of years Carter was joint editor of the Journal of Applied Philosophy.

He works principally in political philosophy, moral philosophy, and environmental philosophy. Carter has published on a wide range of topics: within political philosophy he has written on political obligation, equality, and property rights; within environmental philosophy he has written on the moral status of both nonhuman animals and ecosystems; within applied ethics he has written on problems regarding future persons and world hunger; within political theory he has written on theories of the state and Third World underdevelopment; and within anarchism and Marxism Carter has written on their respective theories of history. He is currently developing an environmentalist moral theory that is, normatively, value pluralist and, metaethically, projectivist,[1] topics he has previously written about in moral theory.