Gal-do (갈도, 葛島) is a small island south of and technically in the county of Hadong in the province of Gyeongsangnam-do. It has a total area of 2.3㎢, and it is located 38 km from the county hall on the mainland. It is a mostly level island and this is good for agriculture. Other islands nearby include Yukji-do, the largest island in the area, and a large number of other islands nearby.