• "Good and Evil," Analysis (1956)
• Mental Acts: Their Content and Their Objects, 1957/1997
  • 1957
• Three Philosophers: Aristotle; Aquinas; Frege (with G.E.M. Anscombe), 1961
• Reference and Generality: An Examination of Some Medieval and Modern Theories, 1962
• History of the corruptions of logic, inaugural lecture, University of Leeds, 1968
• God and the Soul, 1969/2001
• Logic Matters, 1972
• Reason and Argument, 1976 "Saying and Showing in Frege and Wittgenstein," Acta Philosophica Fennica 28 (1976): 54-70
• Truth, Love, and Immortality: An Introduction to McTaggart's Philosophy, 1979
• (edited) Wittgenstein's Lectures on Philosophical Psychology, 1946-47. Notes by P.T. Geach, K.J. Shah, and A.C. Jackson, 1989.
• Logic and Ethics (edited by Jacek Holowka), 1990
• Truth nd Hope: The Furst Franz Josef und Furstin Gina Lectures Delivered at the International Academy of Philosophy in the Principality of Liechtenstein, 1998 (ISBN 0-268-04215-2)

Works Edited by Peter Geach

• (edited, with Max Black) Translations from the Philosophical Writings of Gottlob Frege, 1952/1960/1966