The Sarasvati-rahasya Upanishad (Sanskrit: सरस्वती रहस्य उपनिषत्, IAST: Sarasvatī-rahasya Upaniṣad), meaning “the Secret Knowledge of the Wisdom Goddess”, is a late medieval era Sanskrit text and one of the minor Upanishads of Hinduism. The text is classified as one of the eight Shakta Upanishads and embedded in the Krishna Yajurveda.

The Upanishad is notable for glorifying the feminine as the Shakti (energy, power) and as the metaphysical Brahman principle, and extensively uses a combination of Bhakti and Vedanta terminology. Annette Wilke and Oliver Moebus state that the underlying philosophical premise of this text corresponds to Advaita Vedanta. The text is important to the Goddess traditions of Hinduism.

Bharatiya adhtmavad ke navenata upanishad, Mahatma narayana swami ek vilakshana vyaktitva.