Dongshan Township () is a rural township in the central part of Yilan County, Taiwan.
Zhenzhu, Bucheng, Sanji, Daxing, Tungcheng, Xianghe, Nanxing, Anping, Dongshan, Taihe, Babao, Wanshan, Zhongshan, Shunan, Yongmei, Wuyuan, Qunying, Qinggou, Lupu, Dean, Guangxing, Guangan, Kelin and Dajin Village.
The main industries in Dongshan Township are agriculture and tourism. Local agricultural specialties include tea and pomelo. The tourism industry is centered around leisure, food and beverage, and agricultural tourism.
The township is accessible by the Dongshan Station of Taiwan Railway.