Tharuvaikulam is a costal place located about 12 km north of Tuticorin, in Tuticorin District of Tamil Nadu. Kurukkuchalai lies to the west, Kulattur to the north and Ayyanapuram to the south. There is a Maritech Research Centre at Tharuvaikulam. Koswari Island of Gulf of Manner lies close to this place.