Tathāgataguhya Sūtra

The Tathāgataguhya Sūtra (Secrets of the Tathāgata) or Tathāgatācintyaguhyanirdeśasūtra (The Sūtra that Teaches the Inconceivable Mystery of the Tathāgata) is an important Mahayana Buddhist sutra, which is also part of the Mahāratnakūṭa compilation.

Péter-Dániel Szántó lists some alternative names for this sutra: Āryatathāgataguhyasūtra, Guhyakādhipatinirdeśa, *Vajrapāṇiparivarta, *Tathāgataguhyanirdeśaparivarta, *Acintyabuddhadharmanirdeśa, and *Apramāṇapuṇyodaya. This Mahāyāna sutra is not to be confused with the Guhyasamāja-tantra, which also goes by the name Tathāgataguhyaka.