Forms (Murtis) of Lord Shiva

Shiva Siddhanta - Considers the Lord Shiva to be arupa (formless). It is stated that for the salvation of human kind he took the form of Lingam (It is considered as Arupa of Arup Rupa). Lingam is considered as SadaShiva murti. From this SadaShiva murti, Lord Shiva manifested in various forms. These murtis are known as Maheshwara murtis. Of these 25 are known but there may be more. These murtis can be classified into Bhogamurtis, Yogamurtis, Vegamurtis. Generally SadaShiva murti is found in Sanctum Sanctorum (Gabhara). The Maheshwara murtis are found in the Prahaaram i.e. outside the Sanctum Sanctorum.

25 Maheshwara murtis are as follows

1. Bhikshatanar 
2. Kamari 
3. Kalari 
4. Kalyanasundarar 
5. Rishabharuder 
6. Chandrasekharar 
7. UmaMaheshwarar 
8. Natarajar 
9. Tripurantkar 
10. Jalandhari 
11. GajaSamharmurty 
12. Veerabhadrar (Karalar) 
13. ShankarNarayan 
14. ArdhaNarishwarar 
15. Kiratar 
16. Kankalar 
17. Chandeshanugrahar 
18. Chakrapradar 
19. Somaskandar 
20. Ekapadar 
21. Vighneshanugrahar 
22. Dakshinamurthy 
23. Neelkanthar 
24. Lingodbavar 
25. Sukhasanar

Besides these it is customary in the Shiva temples of South India to list the following 64 murtis also. These are kept in the Prahaaram (Parikrama) along with 63 ShaivaSiddhanta saints knows as Nayanmars.

1. Shivalingam 
2. Lingodbhavar 
3. Mukhalingam 
4. SadaShivam 
5. MahaSadaShivam 
6. Uma Maheshwar 
7. Sukasanamurty 
8. Umeshmurty 
9. Somaskandamurty 
10. Chandrasekharmurty 
11. Vrishabharudmurty 
12. Vrishantikarmurty 
13. Bhujangalitmurty 
14. Bhujangastarmurty 
15. Sandhiyanrittamurty 
16. Sadanrittamurty 
17. Chandatanadamurty 
18. Gangadharmurty 
19. Gajavisarjanamurty 
20. Tripurantakamurty 
21. KalyanSundarmurty 
22. Ardhanarishwarmurty 
23. Gajasamharmurty 
24. Jvarabhagnamurty 
25. Shardhulharamurty 
26. Pasupatmurty
27. Gangalmurty 
28. Keshavarthamurty 
29. Bhikhatanamurty 
30. Simhaganamurty 
31. Chandeshwaranugrahamurty 
32. Vyakhyahadakshinamurty 
33. YogaDakshinamurty 
34. Veenadhardakshinamurty 
35. Kaiantakamurty 
36. Kamanmurty (Kamadhanamurty) 
37. Vaghuleshwaramurty 
38. Bhairavamurty 
39. Apatuddranamurty 
40. Vadukamurty 
41. Kshetrepalmurty 
42. Veerbhadramurty 
43. Agorastramurty 
44. Dakshinagyaharamurty 
45. Kiratamurty 
46. Gurumurty 
47. Ashwarudhamurty 
48. Gajantikamurty 
49. Jalandharvatamurty 
50. Ekpadatrimurty 
51. Tripadatrimurty 
52. Ekpadmamurty 
53. Gaurivarapradamurty 
54. Chakradaneshwarswarupamurty 
55. Gaurisamanavitmurty 
56. Vrishbharanmurty 
57. Garudanikmurty 
58. Brahasirchetakamurty 
59. kurmasamharmurty 
60. Matsyrimurty 
61. Varaharimurty 
62. Prarthamurty 
63. Raktabhisekhapradhanmurty 
64. Shishyabhavmurty 

There are other swarupas also found in the temples of south India.