| Main Entry | R | I | S | M | B | C | N |
| Kala | X | ||||||
| Kalanos | X | ||||||
| Kalology | X | ||||||
| Kames, Henry Home | X | ||||||
| Kami | X | ||||||
| Kant, Immanuel | X | X | X | X | |||
| Kant and aesthetics | X | X | |||||
| Kant and Leibniz | X | ||||||
| Kant and metaphysics | X | X | |||||
| Kant and moral philosophy | X | ||||||
| Kant and philosophical development | X | ||||||
| Kant and philosophy of religion | X | ||||||
| Kant and philosophy of science | X | ||||||
| Kant and theory of judgment | X | ||||||
| Kant's view of mind and consciousness of self | X | ||||||
| Kantianism | X | X | |||||
| Kant-Laplace hypothesis | X | ||||||
| Kapila | X | ||||||
| Karana | X | ||||||
| Karma, Karman | X | ||||||
| Karmakanda | X | ||||||
| Karmendriya | X | ||||||
| Kathenotheism | X | ||||||
| Kelsen, Hans | X | ||||||
| Kemerling, Garth | X | ||||||
| Kempen, Thomas Hemerken van | X | ||||||
| Kenotism | X | ||||||
| Kepler, Johannes | X | ||||||
| Kevala | X | ||||||
| Keynes, John Maynard | X | ||||||
| Kierkegaard, Sören | X | X | X | ||||
| Kilvington, Richard | X | ||||||
| Kim, Jaegwon | X | ||||||
| Kind | X | ||||||
| Kindi, al- | X | ||||||
| Kinêsis (kinhsiV) | X | X | |||||
| King, Jr., Martin Luther | X | ||||||
| KK-thesis | X | ||||||
| Knower, The | X | ||||||
| Knowledge | X | X | X | X | |||
| knowledge by acquaintance vs. knowledge by description | X | X | |||||
| knowledge under known entailment, principle of closure | |||||||
| knowledge, analysis of | X | ||||||
| knowledge, tacit | X | ||||||
| knowledge, theoretical | X | ||||||
| K'o chi | X | ||||||
| Ko wu | X | ||||||
| Kochen-Specker Theorem | X | ||||||
| Koffka, Kurt | X | ||||||
| Köhler, Wolfgang | X | X | |||||
| Koran | X | ||||||
| Korn, Alejandro | X | ||||||
| Kosa | X | ||||||
| Kratocracy | X | ||||||
| Krause, Karl Christian Friedrich | X | ||||||
| Kripke, Saul | X | ||||||
| Kristeva, Julia | X | ||||||
| Kristina, Queen | X | ||||||
| Ksanika-vada | X | ||||||
| Ku | X | ||||||
| Kua | X | ||||||
| Kuei | X | ||||||
| Kuhn, Thomas | X | X | |||||
| Kulpe, Oswald | X | ||||||
| K'un | X | ||||||
| Kung | X | ||||||
| Kuo Hsiang | X |