Olive Island Conservation Park is a protected area in the Australian state of South Australia associated with Olive Island off the west coast of Eyre Peninsula and which is located about 25 kilometres (16 miles) west-northwest of the town of Streaky Bay.

[2] The land under protection was declared as a fauna conservation reserve under the Crown Lands Act 1929 on 16 March 1967.

[3] The fauna conservation reserve was re-proclaimed as the Olive Island Conservation Park in 1972 under the National Parks and Wildlife Act 1972 on 27 April 1972 to ‘conserve a significant Australian sea lion breeding habitat.’[6][5]: 4  On 19 December 1991, additional land was added to the conservation park.

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

[1] In 1980, the conservation park was listed on the former Register of the National Estate.