Nantong (Chinese: 南通; pinyin: Nántōng; former names: Nan-t'ung, Nantung, Tongzhou, or Tungchow; Qihai dialect: [nie tʰoŋ]) is a prefecture-level city in Jiangsu province, China. Located on the northern bank of the Yangtze River, near the river mouth. Nantong is a vital river port bordering Yancheng to the north, Taizhou to the west, Suzhou and Shanghai to the south across the river, and the East China Sea to the east.