Marado or Mara Island is an island 8 km (5.0 mi) off the south coast of Jeju, in southernmost South Korea,[1][2] having an area of 0.3 km2 (0.12 sq mi). It is home to about 90 people, and has long been known for its population being composed of strong women and docile men.[3] It's becoming a popular tourist destination, thanks to the many unusual rock formations, and is connected to the mainland by two regular ferries and numerous excursion boats.

Mara-do is within the administrative boundaries of Daejeong Township (Daejeong-eup) in Seogwipo City, and is included, along with Gapa Island (Gapado), in Gapa-ri, and is South Korea's southernmost point.

Because of its subtropical marine habitat the island is a natural reserve. It was designated as National Monument no. 423 (천연기념물 제423호) on July 18, 2000.