Chittagong, Bangladesh, a city on the Karnaphuli River near the Bay of Bengal, in the southeastern part of the country. Chittagong is the country's chief port and is an important center for exporting tea and jute. It is also a major rail terminus and has an international airport. Steel, plywood, paper, tea, refined oil, and textiles are produced in the city and nearby areas. The Jama Masjid, built in the 17th century, is one of the city's oldest mosques. The University of Chittagong was founded in 1966. Chittagong dates from the ninth century. The city was seriously damaged by a cyclone in 1991.