Blakehurst is a suburb in southern Sydney, in the state of New South Wales, Australia. Blakehurst is located 18 kilometres south of the Sydney central business district, in the local government area of the Municipality of Kogarah and is part of the St George area.

Blakehurst is connected to Sylvania, in the Sutherland Shire, to the south, by Tom Uglys Bridge over the Georges River. Tom Uglys Point is the southernmost part. The eastern border runs along Kogarah Bay and the western border runs along Kyle Bay.