Guanmiao District () is a rural district in southeastern Tainan, Taiwan.
After the handover of Taiwan from Japan to the Republic of China in 1945, Guanmiao was organized as a rural township of Tainan County. On 25 December 2010, Tainan County was merged with Tainan City and Guanmiao was upgraded to a district of the city.
The district consists of Guanmiao, Shanxi, Xiangyang, Beishi, Xinpu, Xinguang, Wujia, Tungshi, Songjiao, Shenkeng, Budai, Beitou, Xiahu, Huayuan and Nanxiong Village.
Guanmiao Service Area and an interchange of the Formosa Freeway is located in here.