Flinders Bay is a bay and locality that is immediately south of the townsite of Augusta, Western Australia, and close to the mouth of the Blackwood River and lies to the north east of Cape Leeuwin which is the most south-westerly mainland point of the Australian Continent, in the state of Western Australia.
On Matthew Flinders Terra Australis Sheet 1 1801-1803 the area was originally known as Dangerous Bight. The bay runs from Point Matthew 1.5 km East North East of Cape Leeuwin to Ledge Point some 8 km east. It was named by either James Stirling or Septimus Roe in 1829 or 1830. Matthew Flinders was first in the Bay on 7 December 1801.
The name of the locality of Flinders Bay is tied to the small settlement that had been a whaling and fishing location, as well as the terminus of the Busselton to Flinders Bay Branch Railway railway line (1920s, closed 1957), and the earlier Flinders Bay jetty (1890s). The settlement was in the earlier days considered to be separate from Augusta but now is more or less the southern portion of the larger community.
The need for safe, and efficient transfer of whale watchers, and a safe mooring location in the Bay for fishermen has seen a proposal for a marina in 2004 which had included plans for the marina close to the old settlement of Flinders Bay. The 2005 revised proposal has moved to a bay further around towards Cape Leeuwin. The Flat Rock site is completed and has been called 'Augusta Boat Harbour' by the department of Transport
The landing area adjacent to the old railway station yard, was original known as The Whaling. It was the area where boats would work from in the nineteenth and early twentieth century. Up until the early 1970s sheds and ramps were still present. In the late 20th century the area had Whale rescue operations occurring very close to the area. Also businesses involved in Whale watching have more recently used the bay.