Kaijiang County () is a county in the east of Sichuan Province, China. It is under the administration of Dazhou city. It has a population of 414,310, of which 180,354 in the urban area.
Kaijiang was established in 553 and until 1914 it was named Xinning County (æ°å®Âå¿).
The county is known for breeding ducks and waterfowls, and for olive oil production. Culturally it has a strong tradition of feng shui.
Kaijiang comprises 1 subdistrict, 11 towns and 1 township. The county seat is Xinning Town.