K
- KK (Knowing that one Knows) Principle
- Kant
- Kashmiri Shaiva Philosophy
- Khusraw, Nasir
- Kierkegaard, Søren
- Kirmani, Hamid al-Din al-
- Knowledge
- Knowledge-First Theories of Justification
- Knowledge Argument Against Physicalism
- Knowledge, Bolzano and Mathematical
- Knowledge by Acquaintance and Knowledge by Description
- Knowledge of Language
- Knowledge Norms
- Ko Hung (Ge Hong)
- Kojève, Alexandre
- Kraft, Victor
- Kripke’s Wittgenstein
- Kuhn, Thomas S.
- Kuo Hsiang (Guo Xiang)