The Sayavaneswarar Temple or Chaayaavaneswarar is a Hindu temple situated in the village of Thirusaikkadu [or Thiruchaykkadu or Chaayavanam] near Kaveripoompattinam or Puhar, Mayiladuthurai in Mayiladuthurai district of Tamil Nadu, India.

The temple dates from the time of the Medieval Cholas.

Tiruvaiyaru, Mayiladuthurai, Thiruvidaimarudur, Thiruvenkadu, Chayavanam and Srivanchiyam are considered equivalents of Kasi.

[1][2] An idol of Standing Sambandar was stolen sometime between 1965 and 1975 (There is documentary proof from 1958 by the French Institute of Pondicherry) and was traced by the Idol Wing of the Tamil Nadu Criminal Investigation Department (IW-CID) with the help of volunteer-collective India Pride Project to National Gallery of Australia in Australia and was successfully recovered in 2022.

This article about Hindu place of worship in Tamil Nadu is a stub.