Simbo is an island in the Solomon Islands; it is located in the Western Province. It was known to early Europeans as Eddystone Island. Simbo is actually two main islands, one small island called Nusa Simbo separated by a saltwater lagoon from a larger one. Collectively the islands are known to the local people as Mandegugusu, while in the rest of the Solomons the islands are referred to as Simbo.