Pulau Ayu, often called Pulau Aju, Ayau or simply Ajoe, is a small Indonesian island located in the Ayu Islands above the northern tip of the Waigeo Islands.
Pulau Ayu is part of the Raja Ampat regency of the West Papua geographical and administrative region of Indonesia.
The two major settlements on the island include Imbik Kuan and Ayu.
The island is surrounded by two large reefs.
Pulau Reni and Pulau Kanobe are two other small inhabited islands north of Pulau Ayu.
Access to the island is limited to small boats due to the reefs and the small size of the island.