東引位於馬祖列島最北方，由東、西引兩島組成。及至今日，東引仍是國之北疆的軍事重地，具有重要戰略地位。

Dongyin Islands is located the most north point of Matsu Islands. It consists of East Dongyin Island and West Dongyin Island. Until now, Dongyin Islands still serve as important military stronghold which guarding the north border of Taiwan and has important strategic position of national defense.