奥比岛是印度尼西亚的小型岛屿，属于摩鹿加群岛的一部分，面积2,542平方公里，北面有面积较大的哈马黑拉岛，岛上最高点海拔1,611米，岸边有几个居民的聚居点。

Obira (also called Utara or Obi) is the main island in the Obi Islands group, in Indonesia, south of the larger Halmahera in North Maluku. Its area is 2542 km².

The island is eponymous to the Obi Island Birdwing, an endemic species of butterfly. Due to extensive logging on the island, which has reduced its habitat, the conservation of this species is a concern.