Changhong Subdistrict (simplified Chinese: 长虹街道; traditional Chinese: 長虹街道; pinyin: Chánghóng Jiēdào) is a subdistrict located within Nankai District, Tianjin, China.

It borders Shaogongzhuang and Jieyuan Subdistricts to the north, Lingdangge and Guangkai Subdistricts to the east, Wanxing and Jialing Street Subdistricts to the south, and Xiangyang Road Subdistrict to the west.

[1] The name Changhong (Chinese: 长虹; lit.

'Long Rainbow') is taken from Changhong Park that is located on the southeastern section of the subdistrict.

[2] Changhong subdistrict is on the southern bank of Nanyun River and western bank of Jin River.