| Obi | |
| Location: | South East Asia |
| Pushpin Map: | Indonesia Maluku |
| Archipelago: | Obi Islands |
| Area Km2: | 2542 |
| Country: | Indonesia |
| Country Admin Divisions Title: | Province |
| Country Admin Divisions: | North Maluku |
| Population: | 29,642 |
| Population As Of: | 2010 |
Obi (also called Obira) is the main island in the Obi Islands group of Indonesia, south of the larger Halmahera in North Maluku. Its area is 2,542 km².
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.[2]