Avittathur Mahadeva Temple, an ancient Hindu temple dedicated to Lord Shiva is situated at Avittathur village of Thrissur District in Kerala state in India. Avittathur gramam (village) is one of the 64 original Brahmin settlements in the ancient Kerala. The Avittathur temple as well as Avittathur Gramam is equally famous like Thaliparamb gramam, Sukapuram gramam, Irinjalakuda gramam and Peruvanam gramam. Avittathur Mahadeva Temple is more than 2000 years old and four old inscriptions have been discovered. According to folklore, sage Agastya has installed the idol of Lord Shiva. It is also believed that the temple's shiva lingam was installed by lord Parasurama the sixth incarnation of Lord Maha Vishnu. The temple is a part of the famous 108 Shiva temples of Kerala.