Kaihua County (simplified Chinese: 开化县; traditional Chinese: 開化縣; pinyin: Kāihuà Xiàn) is a county under the jurisdiction of Quzhou city in Zhejiang Province of the People's Republic of China.

Gutianshan National Nature Reserve is located within Kaihua County.

Towns: Chengguan, Huabu, Majin, Chihuai, Cuntou, Tongcun, Yanglin, Suzhuang, and Qixi.

Rural villages: Yinkeng, Linshan, Zhongcun, Jincun, Zhangwan, Changjiang, Hetian, Tangwu, and Daxibian.

Qianjiangyuan National Forest Park is a famous scenic spot in the county.