Santchinayagar Temple, situated at Tiruavallivalnallur in Thanjavur District
, is a temple dedicated to Lord Shiva
. The deity of the temple is known as Santchinayagar. Goddess Soundaranayagi is also worshipped here. Saint Sambandar and Appar have praised the lord by contributing pathigams. The temple theertham is Sundarapushkarni. The nearest railway station is at Saliamangalam.