Waigeo is an island in West Papua province of eastern Indonesia
. The island is also known as Amberi, or Waigiu. It is the largest of the four main islands in the Raja Ampat
Islands archipelago, between Halmahera and about 65 km to the northwest coast of New Guinea
. The other three main islands are Salawati, Batanta and Misool. Its area is 3,155 km², the highest elevation is almost 1000 m. From west to east the island measures approximately 110 km, north-south circa 50 km.
The town of Wasai in the west of the island is the capital of the Raja Ampat regency. Since 1997, the island has been the site of a substantial pearl farming operation owned by the Australian company Atlas Pacific.