Cape Jaffa is a locality in the Australian state of South Australia located on the headland of Cape Jaffa on the state's south east coastline overlooking the body of water known in Australia as the Southern Ocean and by international authorities as the Great Australian Bight. It located about 19 kilometres (12 mi) south west of the town centre of Kingston SE and about 245 kilometres (152 mi) south south-east of the Adelaide city centre.
The locality includes a settlement located on the north side of the headland overlooking Lacepede Bay which is also known as Cape Jaffa. The settlement includes a jetty and a marina. The locality includes part of the Bernouilli Conservation Reserve.
Cape Jaffa is located within the federal division of Barker, the state MacKillop and the local government areas of the Kingston District Council.