Цяньтан
() is a county-level city in Zhejiang Province, China, and under the jurisdiction of Jiaxing. It is in the south side of Yangtze River Delta, and in the north of Zhejiang. It is to the southwest of central Shanghai, and east of Hangzhou, the provincial capital. To its south lies the Qiantang River. The city has a land area of and at the 2010 census, had a population of 806,966 inhabitants. Haining is known for its leather industry and spectacular tide in the Qiantang River.