The Katha Upanishad (Kaṭhopaniṣad) is one of the primary Upanishads, embedded in the last eight short sections of the Kaṭha school of the Krishna Yajurveda. The Upanishad is the legendary story of a little boy, Nachiketa – the son of Sage Vajasravasa, who meets Yama - the deity of death. Their conversation evolves to a discussion of the nature of man, knowledge, Atman (Self) and moksha (liberation).

This Upanishad is one of the most popular Upanishads for its simplicity and clarity in making the subject matter regarding the highest truth easily comprehensible.