John Nicholas Gray (born 17 April 1948) is an English political philosopher and author with interests in analytic philosophy, the history of ideas, and philosophical pessimism. He retired in 2008 as School Professor of European Thought at the London School of Economics and Political Science. Gray contributes regularly to The Guardian, The Times Literary Supplement and the New Statesman, where he is the lead book reviewer. He is an atheist.
Gray has written several influential books, including False Dawn: The Delusions of Global Capitalism (1998), which argues that free market globalisation is an unstable Enlightenment project currently in the process of disintegration; Straw Dogs: Thoughts on Humans and Other Animals (2002), which attacks philosophical humanism, a worldview which Gray sees as originating in religions; and Black Mass: Apocalyptic Religion and the Death of Utopia (2007), a critique of utopian thinking in the modern world.