K
- KK (Knowing that one Knows) Principle
- Kant, Immanuel
- Kashmiri Shaiva Philosophy
- Khusraw, Nasir
- Kierkegaard, Søren
- Kirmani, Hamid al-Din al-
- Knowledge
- Knowledge Argument Against Physicalism
- Knowledge, Bolzano and Mathematical
- Knowledge by Acquaintance and Knowledge by Description
- Knowledge of Language
- Ko Hung (Ge Hong)
- Kojève, Alexandre
- Kraft, Victor
- Kuo Hsiang (Guo Xiang)
