Dacun Township () is a rural township in Changhua County, Taiwan.
Dacun encompasses and a population of 40,459, including 19,044 males and 17,732 females as of January 2023.
The township comprises 16 villages: Baitang, Cunshang, Dacun, Dalun, Daqiao, Fuxing, Gongqi, Guogou, Huangcuo, Jiadong, Jiaxi, Meigang, Nanshi, Pinghe, Tianyang and Xinxing.
Dacun is Taiwan's largest producer of grapes.
Dacun Township is served by Dacun Station on the Western Line of Taiwan Railway.