Idaiyangudi is a panchayat town in Tirunelveli district in the Indian state of Tamil Nadu. It lies between Uvari and Thisayanvilai. The nearest railway station is Nanguneri and the nearest airport is in Thoothukudi. It is well connected to Thirunelveli, 40 miles north-west. This village was the recipient of the Uthamar Gandhi award.
Bishop Robert Caldwell, the father of Dravidian languages, spent most of his lifetime here as a missionary, and the village is predominantly Christian. The Idaiyangudi Holy Trinity church is a gothic structure and the chief landmark in the village centre. The church is the centre of the village with neatly planned streets around it. The region is mostly semi-arid and the weather is humid though the evenings are cooler as the Bay of Bengal is just two kilometres away.
The land surrounding the village is predominantly owned by the church.
The Caldwell Memorial School caters to educational needs of the children present in the village, though many move to schools in the neighbouring places. There is a nursing college that trains students for the nursing profession.
The Village Panchayat President is Mr. C. Jaykar S/O Mr. Chelliya Nadar
- Citypatriots. "Holy Trinity Church | Tirithuva Alayam | Idaiyangudi Holy Trinity Church | Idaiyangudi Tirithuva Alayam | Idaiyangudi Trinity Church | Idaiyangudi CSI Church". citypatriots.com. Retrieved 2016-12-06.