Tiruvidaimarudur is a town in Thanjavur District, Tamil Nadu state, India.
About north-east of the Temple City Kumbakonam, this is one of the Taluk H.Q. in the Tanjore District. Tiruvidaimarudur has a rich heritage of fertility and people have habit of harvesting thrice in a year. Sometimes the River Cauvery makes a fourth harvest possible..