Sri Sayavaneswar Temple, is a Lord Shiva temple in Sayavanam in Nagapattinam district of Tamil Nadu. It is a padal petra sthalam and is 9th in the series.
The place is also known as Thiruchaikadu. The lingam here is a swayambu murthy.

Padal Petra Sthalam
This is one of the 276 temples mentioned in Devaram which are collections of songs of these temples by Thirunavukkarasar, Thirugnasambandar, Sundarar and Manickavasagar. These collection of songs composed by the great saints describe many of these temples, deities, history, legends, sthala vruksha, temple ponds and other details about the god and temple.