Penguin Island Conservation Park (formerly Penguin Island National Parks Reserve) is a protected area occupying Penguin Island and part of Cape Martin on the mainland in Rivoli Bay on the south east coast of South Australia about 1 kilometre (0.62 miles) south of Beachport.

Initially, the island was resumed under the Crown Lands Act 1929-57 and then it was declared as a Closed Area under the Animals and Birds Protection Act 1919-1953.

On 9 November 1967, the entire island was proclaimed under the National Parks Act 1966 as Penguin Island National Parks Reserve.

[6] Land associated with Cape Martin was added to the protected area in 1970 and 1976 respectively.

[5][4] The conservation park is classified as an IUCN Category IA protected area.