Atulya Nadheswarar Temple is a Hindu temple dedicated to the deity Shiva, located in Arakandanallur in Thirukoilur taluk, a town panchayat in Viluppuram district in the South Indian state of Tamil Nadu. Shiva is worshipped as Atulya Nadheswarar, and is represented by the lingam. His consort Parvati is depicted as Azhagiya Ponnazhagi. The presiding deity is revered in the 7th century Tamil Saiva canonical work, the Tevaram, written by Tamil saint poets known as the Nayanars and classified as Paadal Petra Sthalam.