Pio Island is an island in Solomon Islands province of Makira-Ulawa.[1] It is situated 4 km north-west of Ugi Island. It is 2.7 km long and 1.5 km wide. The estimated terrain elevation above sea level is some 227 metres.[2] The island has no villages.[3] Coral reef surrounds the island, which is largest in the west and south of the island.[3]