Round Island is an uninhabited islet 22.5 kilometres north of Mauritius. It has an area of 1.69 square kilometres and a maximum elevation of 280 metres. The island has been a nature reserve since 1957 and is administered jointly by the National Parks and Conservation Service and the Mauritian Wildlife Foundation.
Rare reptiles that are endemic to Round Island include the Round Island skink, Round Island day gecko, Round Island Boa, and the extinct Round Island Burrowing Boa.
Rare plants endemic to the island include the bottle palm.
Coordinates: 19°51′00″S 57°47′00″E / 19.850037°S 57.783333°E