Jin Island or Tiu Chung Chau (Chinese: 吊鐘洲) is an island in Sai Kung, Hong Kong, located in Port Shelter. It is under the administration of Sai Kung District.
Jin Island is located south of the larger island of Kau Sai Chau, from which it is separated by a narrow channel. The island has a maximum elevation of 216 m and an area of 1.8 km². The smaller Bay Islet (See Chau) is located off its eastern coast, from which it is separated by the channel See Chau Mun (匙洲門).
Because of exposure to the easterly winds and sea waves, landforms such as sea caves, stacks, arches and inlets add to the natural landscape of Jin Island.
The best-known sea cave in Jin Island is Kam Chung Ngam (金鐘岩), commonly known as Goldfish Wagging Tail (金魚擺尾). Tourists can get a perfect shot of the fish shape from the top of the hill.
Coordinates: 22°19′57.52″N 114°19′24.53″E / 22.3326444°N 114.3234806°E