Marulasiddeshwara is one among the five Panchacharya or ascetics who are traditionally regarded as the founders of Virashaivism. He is also known as Marularadhya and Marulsiddha.
The five great saints are venerated as emanations from the five heads of Shiva and as incarnations in each age.
Another belief is that the five saints emerged from the five sthavaralingas.
Marulasiddeshwara is associated with the Shivling worshipped at Ujjaini in Bellary District in Karnataka.