Thirty Minor Upanishads,
I. VEDANTA-UPANISHADS:
1. Muktikopanishad of S'ukla-Yajurveda
2. Sarvasara-Upanishad of Krshna-Yajurveda
3. Niralamba-Upanishad of S'ukla-Yajurveda
4. Maitreya-Upanishad of Samaveda
5. Kaivalya-Upanishad of Krshna-Yajurveda
6. Amrtabindu-Upanishad Do.
7. Atmabodha-Upanishad of Rgveda
8. Skanda-Upanishad of Krshna-Yajurveda
9. Paingala-Upanishad of S'ukla-Yajurveda
10. Adhyatma-Upanishad Do.
11. Subala-Upanishad Do.
12. Tejobindu-Upanishad of Krshna-Yajurveda
13. Brahmopanishad Do.
14. Vajrasuchi-Upanishad of Samaveda
II. PHYSIOLOGICAL UPANISHADS:
15. S'ariraka-Upanishad of Krshna-Yajurveda
16. Garbha-Upanishad Do.
PAGE III. MANTRA-UPANISHADS:
17. Tarasara-Upanishad of S'ukla-Yajurveda
18. Narayana-Upanishad of Krshna-Yajurveda
19. Kalisantarana-Upanishad Do.
IV. SANNYASA-UPANISHADS:
20. Bhikshuka-Upanishad of S'ukla-Yajurveda
21. Naradaparivrajaka-Upanishad of Atharvanaveda
V. YOGA-UPANISHADS:
22. S'andilya-Upanishad of Atharvanaveda
23. Yogatattva-Upanishad of Krshna-Yajurveda
24. Dhyanabindu-Upanishad of Samaveda
25. Hamsa-Upanishad of S'ukla-Yajurveda
26. Amrtanada-Upanishad of Krshna-Yajurveda
27. Varaha-Upanishad Do.
28. Mandalabrahmana-Upanishad of S'ukla-Yajurveda
29. Nadabindu-Upanishad of Rgveda
30. Yogakundali-Upanishad of Krshna-Yajurveda
The Upanishads are ancient Hindu philosophical and spiritual texts that mark the culmination of the Vedic literature and focus on meditation, consciousness, and the ultimate nature of reality and self. They are considered foundational works in Hindu thought, representing the last phase of Vedic revelation and exploring the knowledge of Brahman (the universal reality) and Atman (the individual soul).