Eyre Peninsula in the context of "Ceduna, South Australia"

The Spencer Gulf is the westernmost and larger of two large inlets (the other being Gulf St Vincent) on the southern coast of Australia, in the state of South Australia, facing the Great Australian Bight. It spans from the Cape Catastrophe and Eyre Peninsula in the west to Cape Spencer and Yorke Peninsula in the east.

The largest towns on the gulf are Port Lincoln, Whyalla, Port Pirie, and Port Augusta. Smaller towns on the gulf include Tumby Bay, Port Neill, Arno Bay, Cowell, Port Germein, Port Broughton, Wallaroo, Port Hughes, Port Victoria, Port Rickaby, Point Turton, and Corny Point.

Eyre Highway is a 1,664-kilometre (1,034 mi) highway linking Western Australia and South Australia via the Nullarbor Plain. Signed as National Highways 1 and A1, it forms part of Highway 1 and the Australian National Highway network linking Perth and Adelaide. It was named after explorer Edward John Eyre, who was the first European to cross the Nullarbor by land, in 1840–1841. Eyre Highway runs from Norseman in Western Australia, past Eucla, to the state border. Continuing to the South Australian town of Ceduna, it crosses the top of the Eyre Peninsula before reaching Port Augusta.

The construction of the East–West Telegraph line in the 1870s, along Eyre's route, resulted in a hazardous trail that could be followed for interstate travel. A national highway was called for, with the federal government seeing the route's importance in 1941, when a war in the Pacific seemed imminent. The highway was constructed between July 1941 and June 1942, and was trafficable by January 1942. It was originally named Forrest Highway, after John Forrest, by the war cabinet. It was officially named Eyre Highway, a name agreed upon by the states' nomenclature committees.

Cape Catastrophe is a headland in the Australian state of South Australia located at the southeast tip of Jussieu Peninsula on Eyre Peninsula. It is one of the natural features named by the British navigator Matthew Flinders in memory of the eight crew who were lost from a cutter that capsized sometime after being launched from HM Sloop Investigator to search for water on 21 February 1802.Flinders also nominated the headland as being the western point of the mouth of Spencer Gulf.It is currently located within the gazetted locality of Lincoln National Park and the protected area known as the Memory Cove Wilderness Protection Area.

Port Lincoln is a city on the Lower Eyre Peninsula in the Australian state of South Australia. Known as Galinyala by the Barngarla people who hold native title rights, it is situated on the shore of Boston Bay, which opens eastward into Spencer Gulf. It is the largest city in the West Coast region, and is located approximately 280 km (170 mi) from the state's capital city of Adelaide (646 km (401 mi) by road).

In June 2019 Port Lincoln had an estimated population of 26,418, having grown at an average annual rate of 0.55% year-on-year over the preceding five years. The city claims to be Australia's "Seafood Capital".

Whyalla /waɪˈælə/ is a city in South Australia. It was founded as Hummock's Hill, and was known by that name until 1916. It is the fourth most populous city in the Australian state of South Australia after Adelaide, Mount Gambier, and Gawler, and along with Port Pirie and Port Augusta is one of the three towns to make up the "Iron Triangle". It is a seaport located on the east coast of the Eyre Peninsula and is known as the "Steel City" due to its integrated steelworks and shipbuilding heritage. The Whyalla Steelworks is the major employer in the town, and has in February 2025 been put into voluntary administration by the Government of South Australia. The port of Whyalla has been exporting iron ore since 1903.

Port Augusta (Goordnada in the revived indigenous Barngarla language) is a coastal city in South Australia about 310 kilometres (190 mi) by road from the state capital, Adelaide. Most of the city is on the eastern shores of Spencer Gulf, immediately south of the gulf's head, comprising the city's centre and surrounding suburbs, Stirling North, and seaside homes at Commissariat Point, Blanche Harbor and Miranda. The suburb of Port Augusta West is on the western side of the gulf on the Eyre Peninsula. Together, these localities had a population of 13,515 in the 2021 census.

Formerly a seaport, the city supports regional agriculture and services many mines in the South Australian interior to its north. A significant industry was electricity generation until 2019, when its coal-burning power stations were shut down. A solar farm opened in 2020.

Tumby Bay is a coastal town situated on the Spencer Gulf, on the eastern coast of Eyre Peninsula in South Australia, 45 kilometres (28 mi) north of Port Lincoln. The town of Tumby Bay is the major population centre of the District Council of Tumby Bay, and the centre of an agricultural district farming cereal crops and sheep, as well as having established fishing and tourism industries.

Port Neill (formerly Carrow) is a small coastal town on the eastern side of the Eyre Peninsula, in South Australia about 3 km off the Lincoln Highway between the major towns of Whyalla and Port Lincoln. It is 576 km by road from Adelaide.

The town offers protected beaches for swimming, as well as providing a venue for fishing, boating, sailing, skiing or skin-diving.

Arno Bay is a small fishing and tourist town on the east coast of Eyre Peninsula in South Australia, located on the Lincoln Highway about halfway between Whyalla and Port Lincoln. First proclaimed under the name Bligh in 1883, the current name dates back to 1940. It is a recreational town with a number of marine and nature based attractions, including fishing, surfing and swimming.