Duchang (Chinese: 都昌; pinyin: Dūchāng) is a county in the north-northeast of Jiangxi province, People's Republic of China.

Containing part of Poyang Lake, it is under the jurisdiction of the prefecture-level city of Jiujiang.

The total area is 2,669.53 km2 (1,030.71 sq mi), and the population is 813,000.[when?]

Duchang County has 12 towns and 12 townships.

This Jiangxi location article is a stub.