The Upanishad

Upanishad are highly philosophical and metaphysical part of Vedas. Being the conclusive part of Vedas, Upanishad can be called the whole substance of Vedic wisdom. The word Upanishad is composed by three words, Up + Ni + Sad ( उप + नि + सद् ); where Upa ( उप ) means Sub/Near, Ni ( नि ) means Down/Bellow and sad ( सद् ) means Sit. Which can be translated as "sitting near".

All Upanisads are associated to different Vedas as well as grouped into different groups.

Groups and number of associated Upanisads:

1. Mukhya ( मुख्य ) - Main/Principal - 10
2. Samanya Vedanta ( सामान्य वेदान्त ) - Common/Normal - 21
3. Sannyasa ( सन्यास ) - Attributed to Sannyasa - 23
4. Shakta ( शाक्त ) - Attributed to Shakti ( शक्ति ) - Goddess of Power - 9
5. Vaishnava ( वैश्णव ) - Attributed to Vishnu ( विश्णु ) - God of Preservation - 13
6. Shaiva ( शैव ) - Attributed to Shiv ( शिव ) - God of Destruction and Salvation - 14
7. Yoga ( योग ) - Union - 17

Vedas and number of associated Upanisads:

1. Rigveda ( ॠग्वेद ) - 10
2. Yajurveda ( यजुर्वेद ) - 51
   2.1. Shukla Paksha ( शुक्लपक्ष ) - 19
   2.2. Krishna Paksha ( कृष्णपक्ष ) - 32
3. Samaveda ( सामवेद ) - 16
4. Atharvaveda ( अथर्ववेद ) - 31.

List of the Upanishad:

S. No.	Name of Upanishad	Group	Associated to
1	Isha - ईशा	Mukhya	Yajur shukla
2	Kena - केण	Mukhya	Samaveda
3	Katha - कथा	Mukhya	Yajur krishna
4	Prashna - प्रश्न	Mukhya	Atharvaveda
5	Mundaka - मुन्डक	Mukhya	Atharvaveda
6	Mandukya - माण्डुक्य	Mukhya	Atharvaveda
7	Taittiriya - तैत्रेय	Mukhya	Yajur krishna
8	Aitreya - ऐत्रैय	Mukhya	Rigveda
9	Chhandogya - छान्दोग्य	Mukhya	Samaveda
10	Brahadaranyaka - बृहदारण्यक	Mukhya	Yajur shukla
11	Brahma - ब्रह्म	Sannyasa	Yajur krishna
12	Kaivalya - कैवल्य	Shaiva	Yajur krishna
13	Jabala - जाबाल - I	Sannyasa	Yajur shukla
14	Shwetashwatara - श्वेताश्वर	Sannyasa	Yajur krishna
15	Hansa - हंस	Yoga	Yajur shukla
16	Aaruneya - आरुणेय	Sannyasa	Samaveda
17	Garbha - गर्भ	Sannyasa	Yajur krishna
18	Narayana - नारायण	Vaishnava	Yajur krishna
19	Paramhansa - परमहंस	Sannyasa	Yajur shukla
20	Amrit Bindu - अमृत बिन्दु	Yoga	Yajur krishna
21	Amrit Naad - अमृत नाद	Yoga	Yajur krishna
22	Atharva Shir - अथर्व शिर	Shaiva	Atharvaveda
23	Atharva Shikh - अथर्व शिख	Shaiva	Atharvaveda
24	Maitrayani - मैत्रायणि	Samanya	Samaveda
25	Kaushitaki - कौशिताकि	Samanya	Rigveda
26	Brihjjabala - बृहज्जाबाल	Shaiva	Atharvaveda
27	Nrisinhtapani - नृसिंहतापनी	Vaishnava	Atharvaveda
28	Kalagnirudra - कालाग्निरुद्र	Shaiva	Yajur krishna
29	Maitreyi - मैत्रेयि	Sannyasa	Samaveda
30	Subal - सुबाल	Samanya	Yajur shukla
31	Kchhurik - क्षुरिक	Yoga	Yajur krishna
32	Mantrik - मान्त्रिक	Samanya	Yajur shukla
33	Sarva Saar - सर्व सार	Samanya	Yajur krishna
34	Niralanba - निरालम्ब	Samanya	Yajur shukla
35	Shuk Rahasya - शुक रहस्य	Samanya	Yajur krishna
36	Bajra Suchi - बज्र सूचि	Samanya	Samaveda
37	Tejo Bindu - तेजो बिन्दु	Sannyasa	Yajur krishna
38	Naad Bindu - नाद बिन्दु	Yoga	Rigveda
39	Dhyana Bindu - ध्यान बिन्दु	Yoga	Yajur krishna
40	Brahma Vidya - ब्रह्म विद्या	Yoga	Yajur krishna
41	Yoga Tatwa - योग तत्व	Yoga	Yajur krishna
42	Atma Bodh - आत्म बोध	Samanya	Rigveda
43	Parivrata - परिव्रात ( Naradparibrajaka - नारदपरिव्राजक )	Sannyasa	Atharvaveda
44	Trishikhi - त्रिषिखि	Yoga	Yajur shukla
45	Sita - सीता	Shakta	Atharvaveda
46	Yogachudamani - योगचूडामणि	Yoga	Samaveda
47	Nirvana - निर्वाण	Sannyasa	Rigveda
48	Mandalbrahaman - मण्डलब्राह्मण	Yoga	Yajur shukla
49	Dakshinamurti - दक्षिणामूर्ति	Shaiva	Yajur krishna
50	Sharabha - शरभ	Shaiva	Atharvaveda
51	Skanda - श्कन्द ( Tripadwibhuti - त्रिपाड्विभूटि )	Samanya	Yajur krishna
52	Mahanarayana - महानारायण	Vaishnava	Atharvaveda
53	Adwayataraka - अद्वयतारक	Sannyasa	Yajur shukla
54	Ramarahasya - रामरहस्य	Vaishnava	Atharvaveda
55	Ramatapani - रामतापणी	Vaishnava	Atharvaveda
56	Vasudeva - वासुदेव	Vaishnava	Samaveda
57	Mudgal - मुद्गल	Samanya	Rigveda
58	Shandilya - शाण्डिल्य	Yoga	Atharvaveda
59	Paingala - पैंगल	Samanya	Yajur shukla
60	Bhikshuk - भिक्षुक	Sannyasa	Yajur shukla
61	Mahat - महत	Samanya	Samaveda
62	Shareerak - शारीरक	Samanya	Yajur krishna
63	Yogshikha - योगशिक्षा	Yoga	Yajur krishna
64	Tureeyateet - तुरीयातीत	Sannyasa	Yajur shukla
65	Sannyasa - सन्यास	Sannyasa	Samaveda
66	Paramhansa-Parivrajak - परमहंस परिब्राजक	Sannyasa	Atharvaveda
67	Akshamalik - अक्षमालिक	Shaiva	Rigveda
68	Avyakt - अव्यक्त	Vaishnava	Samaveda
69	Ekakshar - एकाक्षर	Samanya	Yajur krishna
70	Annapurna - अन्नपूर्ण	Shakta	Atharvaveda
71	Surya - सूर्य	Samanya	Atharvaveda
72	Akshi - अक्षि	Samanya	Yajur krishna
73	Adhyatma - अध्यात्मा	Samanya	Yajur shukla
74	Kundik - कुण्डिक	Sannyasa	Samaveda
75	Savitri - सावित्रि	Samanya	Samaveda
76	Aatma - आत्मा	Samanya	Atharvaveda
77	Pashupat - पाशुपत	Yoga	Atharvaveda
78	Parbrahm - पारब्रह्म	Sannyasa	Atharvaveda
79	Avadhoot - अवधूत	Sannyasa	Yajur krishna
80	Tripuratapani - त्रिपुरातपनि	Shakta	Atharvaveda
81	Devi - देवि	Shakta	Atharvaveda
82	Tripur - त्रिपुर	Shakta	Rigveda
83	Kathrudra - कठरुद्र	Sannyasa	Yajur krishna
84	Bhavan - भावन	Shakta	Atharvaveda
85	Rudra Hridaya - रुद्र हृदय	Shaiva	Yajur krishna
86	Yoga Kundalini - योग कुण्डलिनि	Yoga	Yajur krishna
87	Bhasm - भस्म	Shaiva	Atharvaveda
88	Rudraksh - रुद्राक्ष	Shaiva	Samaveda
89	Ganapati - गणपति	Shaiva	Atharvaveda
90	Darshan - दर्शन	Yoga	Samaveda
91	Taarsaar - तारसार	Vaishnava	Yajur shukla
92	Mahavakya - महावाक्य	Yoga	Atharvaveda
93	Panch Brahm - पञ्च ब्रह्म	Shaiva	Yajur krishna
94	Pranagni Hotra - प्रणाग्नि होत्र	Samanya	Yajur krishna
95	Gopal Tapani - गोपाल तपणि	Vaishnava	Atharvaveda
96	Krishna - कृष्ण	Vaishnava	Atharvaveda
97	Yagyavalkya - याज्ञवल्क्य	Sannyasa	Yajur shukla
98	Varah - वराह	Sannyasa	Yajur krishna
99	Shatyayani - शात्यायनि	Sannyasa	Yajur shukla
100	Hayagreev - हयग्रीव	Vaishnava	Atharvaveda
101	Dattatrey - दत्तात्रेय	Vaishnava	Atharvaveda
102	Gaarud - गारुड	Vaishnava	Atharvaveda
103	Kali Santaran - कलि सण्टारण	Vaishnava	Yajur krishna
104	Jabala - जाबाल - II	Shaiva	Samaveda
105	Saubhagya - सौभाग्य	Shakta	Rigveda
106	Saraswatee Rahasya - सरस्वती रहस्य	Shakta	Yajur krishna
107	Bahrich - बहृच	Shakta	Rigveda
108	Muktik - मुक्तिक	Samanya	Yajur shukla