Obi (also called Obira) is the main island in the Obi Islands group of Indonesia, south of the larger Halmahera in North Maluku.

The island is eponymous to the Obi Island Birdwing, an endemic species of butterfly.

[1] Extensive logging on the island has reduced its habitat, making the species' conservation a concern.

In July 2016, provincial governor Abdul Ghani Kasuba successfully negotiated with the China-based Jinchun Group for the building of a nine-trillion rupiah nickel smelter on the island.

This article about a location in Maluku Province is a stub.