Thondi or Tondi is a Panchayat town in Ramanathapuram district in the Indian state of Tamil Nadu. It is believed to be an ancient port site of Pandyan kingdom.DemographicsIndian census, Thondi had a population of 15,298. Males constitute 49% of the population and females 51%. Thondi has an average literacy rate of 69%, higher than the national average of 59.5%: male literacy is 76, and female literacy is 63%. 15% of the population is under 6 years of age.