Jiangjun District (Chinese: 將軍區; Hanyu Pinyin: Jiāngjūn Qū; Tongyong Pinyin: Jiangjyun Cyu; Wade–Giles: Chiang1-chün1 Ch'ü1; Pe̍h-ōe-jī: Chiong-kun-khu) is a rural district of about 18,745 residents in Tainan, Taiwan.

After the handover of Taiwan from Japan to the Republic of China in 1945, Jiangjun was organized as a rural township of Tainan County.

On 25 December 2010, Tainan County was merged with Tainan City and Jiangjun was upgraded to a district of the city.

Jiangjun is located on the west coast of Taiwan, and has a harbor and a beach.

Zhangrong, Xihua, Xihe, Zhongxing, Jiachang, Baoyuan, Linghe, Renhe, Beipu, Jiangfu, Jianggui, Sanji, Yushan, Guangshan, Zhangsha, Pingsha, Kunshen and Kunming Village.