Datong Township (Chinese: 大同鄉; pinyin: Dàtóng Xiāng; Wade–Giles: Da4-t'ung2 Hsiang1) is a mountain indigenous township in the southwestern part of Yilan County, Taiwan.

The township is dominated by rugged mountains and wide river valleys.

The villages of Datong include Daping, Fuxing, Hanxi, Leshui, Lunpi, Mao'an, Nanshan, Siji, Songluo and Yingshi.

[1] It was formerly the "Aboriginal Area" of Ratō District, Taihoku Prefecture during Japanese rule.

Economic activities include trucking silt from the Lanyang River for use in cement production and cultivation of tea, cabbage and betel nut palms.