- Kant, Immanuel (1724-1804) -- C.D. Broad's biographical sketch
- Critique of Pure Reason (trans. Norman Kemp Smith) (1781)
- Prolegomena to any Future Metaphysics (1783)
- Fundamental Principles of the Metaphysics of Morals (1785)
- Critique of Practical Reason (1788)
- Critique of Judgment (1790)
- Introduction to the Metaphysics of Morals (1797)
- Kaplan, Abraham
- "Are Ethical Judgments Assertions?" Philosophical Review 51, 1942.
- "Definition and Specification of Meaning," Journal of Philosophy 43 (1946): 281-88.
- (and H. F. Schott) "A Calculus of Empirical Classes," Methodos 3 (1951): 165-88.
- Katz, Jerrold
- The Problem of Induction and its Solution (Chicago, 1962).
- Kaufmann, F.
- Methodology of the Social Sciences (Oxford University Press, 1944).
- "Symposium on Probability," Philosophy and Phenomenological Research 6-7, 1945-6.
- Klein, Melanie
- "The Early Development of Conscience in the Child"
- Kneale, William Calvert (1906-1990)
- "Is Existence a Predicate?" Aristotelian Society, Supplementary Volume 15, 1936. Reprinted in Readings in Philosophical Analysis, ed. H. Feigl and W. Sellars (New York: Appleton-Century-Crofts, 1949).
- "The Notion of Substance," Proceedings of the Aristotelian Society 40, 1939-40.
- "Truths of Logic," Proceedings of the Aristotelian Society 46, 1945-6.
- "Are Necessary Truths True by Convention?" Aristotelian Society, Supplementary Volume 21, 1947.
- Probability and Induction (Oxford University Press, 1949).
- "Objectivity in Morals," Philosophy 25, 1950. Reprinted in Readings in Ethical Theory, ed. Wilfrid Sellars and John Hospers (New York: Appleton-Century-Crofts, 1952).
- Köhler, Wolfgang (1887- )
- "Ein Altes Scheinproblem," Die Naturwissenschaften, 1929.
- The Place of Value in a World of Fact (New York: Liveright, 1938).
- Krikorian, Y. H.
- (ed.) Naturalism and the Human Spirit (Columbia University Press, 1944).
- Kripke, Saul
- Kuhn, Thomas S. -- Critique of
- The Structure of Scientific Revolutions (Chicago: The University of Chicago Press, 1962).
- Kyburg, Henry E.
- "Probability, Rationality, and a Rule of Detachment," Proceedings of the 1964 International Congree for Logic, Methodology and Philosophy of Science, ed. Y. Bar-Hillel (North-Holland Publishing Company, 1964). Reprinted in New Readings in Philosophical Analysis, ed. H. Feigl, W. Sellars and K. Lehrer (New York: Appleton-Century-Crofts, 1972).