Dead Horse Bay is located on the western shore of the Hawkesbury River, New South Wales, Australia, south of Brooklyn and between Sandy Bay and Parsley Bay. It is also shown as Lookout Bay on Admiralty Chart 204. Perhaps a dead horse was washed ashore here at some time: a whale was stranded here in the 1980s. The name Lookout Bay would have arisen from the common early practice of posting someone to look for shoals of fish in order to alert the local fishing community.