Gordon Inlet is a transient estuarine inlet located at the southwest corner of Fitzgerald River National Park in Western Australia, approximately 15 kilometers northwest of Bremer Bay. The estuary is shallow with a high evaporation rate and can dry out almost completely. Its water is saline, with salinity levels ranging from slightly less than seawater to over four times as saline. Vehicle access to the water for launching small boats is provided at a location known as The Peninsula, with off-beach parking available for boats and trailers. Caution is advised when driving near the inlet's edge, as the soft ground can lead to vehicles becoming bogged. The coastline here consists of broad sandy bays separated by rocky headlands and steep cliffs, with beaches that range from sheltered to exposed and wind-swept. The inlet is part of the Mamang Maambakoort Marine Park, and seagrass meadows in front of Gordon Inlet are of particular cultural interest. The surrounding plant communities are low scrub and coastal vegetation on wind-blown sands. The area is known for its significant floral diversity and wildlife, including migratory birds such as the white-bellied sea eagle, Pacific swift, and Caspian tern, with whales, dolphins, seals, and sea lions frequenting the coastal waters. Canoeing is a suitable activity for the inlet and the Gairdner River, which flows into it.