Hukou Township (Chinese: 湖口鄕; pinyin: Húkǒu Xiāng) is a rural township of Hsinchu County, Taiwan.

With an area of 58.43 km2 (22.56 sq mi), it is the third largest township in the county.

The township comprises 20 villages: Aishi, Boluo, Decheng, Fenghuang, Fengshan, Hexing, Hujing, Hukou, Hunan, Renshi, Shengli, Tungxing, Xiaoshi, Xinshi, Xinyi, Zhangan, Zhangling, Zhongshi, Zhongxing and Zhongzheng.

[2] The township is home to the Hsinchu Industrial Park.

Taiwan High Speed Rail passes through the central part of the township, but there is no planned station.