This article relates Chesterton’s theology, and that of other theologians, to existing theories of humor. It asks: With regard to the understanding of humor, what is offered by a theological perspective—especially by Chesterton’s theology—that cannot be supplied by philosophical and psychological theories? The article situates Chesterton’s work in relation to three theories of humor: the superiority theory, the release theory, and the incongruity theory. It then examines two important relationships: first, that between humor, worship, and joy; then, that between humor, cognition, and theology. While focusing on Chesterton’s writing, it also considers relevant aspects of the work of other thinkers, including Ian Ker, Duncan Reyburn, Thomas Aquinas, Søren Kierkegaard, Reinhold Niebuhr, Karl Rahner, Peter Berger, Ingvild Sælid Gilhus, Terry Lindvall, and Brian Edgar. The article concludes by suggesting the beginnings of an outline of a theology of humor.