Amoy, a port in the province of Fo-Kien, China, situated on an island opposite Formosa. It is commanded by a strong citadel on the hills to the landward, and possesses an excellent harbour. In 1841 it was captured by the British and was included in the five open ports by the treaty of Nankin. In 1853 the Taepings. occupied the town and retained it for nearly two years. The tea trade forms the chief commerce of Amoy, but there are local industries, such as porcelain, paper, grass-cloth, umbrellas.