Cuddalore, city, northeastern Tamil Nadu state, southeastern India, on the Coromandel Coast of the Bay of Bengal. Its name is derived from kuttal-ur (“junction town”) and refers to its location near the junction of the Ponnaiyar River with its tributary, the Gadilam River. Both rivers frequently flood, causing damage to the city.
An ancient seaport, Cuddalore developed rapidly after trading rights were obtained by the British East India Company in 1682, but it later declined with the expansion of Madras (Chennai). It now handles only a small percentage of Tamil Nadu’s foreign trade, dealing almost exclusively with Malaysia and Singapore. Its fishing and shipbuilding industries have expanded. Cuddalore has several colleges affiliated with the University of Madras in Chennai. It is the site of the 7th-century Pataleswarar Temple to the Hindu god Shiva.
Coastal areas in and near Cuddalore sustained extensive damage during the Indian Ocean tsunami of 2004. In addition to some 650 people killed or listed as missing in the area, more than 61,000 residents were evacuated and housed in temporary camps. Seawater from the tsunami also inundated a large area of farmland along the coast, making it unfit for agriculture. Recovery efforts included the construction of hundreds of new houses on government-provided land, several new schools, and children’s homes for those orphaned by the disaster. Pop. (2001) 158,634; (2011) 173,636.