Dongyin is an insular rural township in Lienchiang County, Fujian Province, Republic of China (Taiwan). It lies in the East China Sea off the coast of Fujian Province, China, near the cities of Fuzhou and Ningde. It is the northernmost territory of Taiwan.
The township is known for its natural environment and Eastern Min culture. It is also known for the historical Dongyong Lighthouse and for its military importance and history.