Sada Shiva Maha Sadashiva
Here is the list of 108 Forms of Lord Shiva (Maheshvara Murthis). As per Shaiva Siddhantha, there are 108 forms of Lord Shiva which are called Maheshwara Murthis.
This list of 108 forms includes the anthropomorphic forms (iconic forms) and not the avataras (incarnations).
These Maheshvara Murtis are secondary forms to the primary ones like Shivalingam. Collectively, the aniconic forms are called Sadashiva Murti.
Bhikshatana Murti
Nataraja Murti
Aja-Ekapada Murti
Yoga-Dakshinamurti
Lingodbhava Murti
Kamadahana Murti (Kamari)
Tripurantaka Murti (Tripurari)
Mahakaleshvara Murti (Kalari/Kalantaka/Kalasamhara)
Jalandharavata Murti (Jalandhari)
Gajasurasamhara Murti (Gajantika)
Virabhadra Murti (Karala)
Kankala-Bhairava Murti
Kalyanasundara Murti
Vrishabharudha Murti
Chandrashekhara Murti
Uma-Maheshvara Murti
Shankaranarayana Murti (Keshavardha/Harihara)
Ardanarishvara Murti
Kirata Murti
Chandeshvaranugraha Murti
Chakradaneshvararupa Murti (Chakrapradasvarupa)
Somaskanda Murti
Gajamukhanugraha Murti
Nilakantha-Maheshvara Murti
Sukhasana Murti
Mukhalinga Murti (Panchamukhalingam)
Sadashiva Murti
Mahasadashiva Murti
Umesha Murti
Vrishabhantika Murti
Bhujangarlalita Murti
Bhujangatrasa Murti
Sandhyanritta Murti
Sadanritya Murti
Chanda-Tandava Murti
Gangadhara Murti
Gangavisarjana Murti
Jvarabhagna Murti
Shardhulahara Murti
Pashupata Murti
Vyakhyana-Dakshinamurti
Vina-Dakshinamurti
Vaguleshvara Murti
Apat-Uddharana Murti
Vatuka Bhairava Murti
Kshetrapala Murti
Aghorastra Murti
Dakshayajnahara Murti
Ashvarudha Murti
Ekapada-Trimurti Murti
Tripada-Trimurti Murti
Gaurivaraprada Murti
Gaurililasamanvita Murti
Vrishabhaharana Murti
Garudantika Murti
Brahmasirachedataka Murti
Kurmasamhara Murti (Kurmari)
Mastyasamhara Murti (Mastyari)
Varahasamhara Murti (Varahari)
Simhagna Murti (Sharabha/Sharabheshvara)
Raktabhikshapradana Murti
Guru-Murti (Gurushiva)
Prarthana-Murti
Shishyabhava Murti
Anandatandava Murti
Shantyatandava Murti
Samharatandava Murti
Kapalishvara Murti (Brahmakapaladhara)
Mahamritunjaya Murti
Tryaksharmritunjaya Murti
Shadaksharamrityunjaya Murti
Andhasurasamhara Murti
Juvarapaghna Murti
Simhasana Murti
Ilakeshvara Murti
Satyanatha Murti
Ishana Murti
Tatpurusha Murti
Aghora Murti
Vamadeva Murti
Ananteshvara Murti
Kumaranugraha Murti
Hayagrivanugraha Murti
Maha Rudra Murti
Nartana Rudra Murti
Shanta Rudra Murti
Yoga Rudra Murti
Krodha Rudra Murti
Vrinji Rudra Murti
Muhunta Rudra Murti
Dvibhuja Rudra Murti
Ashtabhuja Rudra Murti
Dashabhuja Rudra Murti
Trimukha Rudra
Panchamukhabhishana Rudra Murti
Jvalakeshashadbhuja Rudra Murti
Aghora Rudra Murti
Vishnudharmottara Rudra Murti
Bhima Rudra Murti
Svarnakarshana Rudra Murti
Bhishana Bhairava Murti
Kapala Bhairava Murti
Unmatta Bhairava Murti
Krodha Bhairava Murti
Asitanga Bhairava Murti
Ruru Bhairava Murti
Chanda Bhairava Murti
Samhara Bhairava Murti