The Kena Upanishad (Sanskrit: केनोपनिषद्, IAST: Kenopaniṣad) (also alternatively known as Talavakara Upanishad) is a Vedic Sanskrit text classified as one of the primary or Mukhya Upanishads that is embedded inside the last section of the Talavakara Brahmanam of the Samaveda. It is listed as number 2 in the Muktikā, the canon of the 108 Upanishads of Hinduism.
The Kena Upanishad was probably composed sometime around the middle of the 1st millennium BCE. It has an unusual structure where the first 13 are verses composed as a metric poem, followed by 15 prose paragraphs of main text plus 6 prose paragraphs of epilogue. Paul Deussen suggests that the latter prose section of the main text is far more ancient than the poetic first section, and Kena Upanishad bridged the more ancient prose Upanishad era with the metric poetic era of Upanishads that followed.
