Vedaraniam (also spelt as Vedaranyam) is a municipality in Nagapattinam district in the Indian state of Tamil Nadu.

Vedaraniyam is located at 10°22′N 79°51′E / 10.37°N 79.85°E / 10.37; 79.85. It has an average elevation of 1 m (3.3 ft). Located in south Tamil Nadu.

As of 2001^[update] India census, Vedaraniam had a population of 31,728. Males constitute 48% of the population and females 52%. Vedaraniam has an average literacy rate of 71%, higher than the national average of 59.5%: male literacy is 79%, and female literacy is 64%. In Vedaraniam, 11% of the population is under 6 years of age. Municipality area 36.26 km² consists revenue villages of Thopputhurai, Agasthiyampalli

The primary economic activities of the region are salt-manufacturing, fishing, salt water prawn culture and agriculture.

Saltpans (crystallisers) are spread over 11,000 acres (45 km²) along the coastline, including those of small, medium and large salt manufacturers. According to rough estimates, about two lakh tonnes of edible salt and over five lakh tonnes of industrial grade salt are produced annually in the region. Two major private companies, Chemplast Sanmar and Gujarat Heavy Chemicals, also have huge salt manufacturing facilities here. The industry provides direct and indirect employment to over 10,000 people.