The Shark Bay Marine Park is protected marine park located within the UNESCO World Heritage–listed Shark Bay, in the Gascoyne region of Western Australia. The 748,725-hectare (1,850,140-acre) marine park is situated over 800 km (500 mi) north of Perth and 400 kilometres (250 mi) north of Geraldton.

Shark Bay is a World Heritage Site in the Gascoyne region of Western Australia. The 23,000-square-kilometre (8,900 sq mi) area is located approximately 800 kilometres (500 mi) north of Perth, on the westernmost point of the Australian continent. UNESCO's listing of Shark Bay as a World Heritage Site reads:"Shark Bay's waters, islands and peninsulas....have a number of exceptional natural features, including one of the largest and most diverse seagrass beds in the world. However, it is for its stromatolites, that the property is most renowned. The property is also famous for its rich marine life including a large population of dugongs, and provides a refuge for a number of other globally threatened species."