George Porter (1786-1872) was a mariner and early pioneer of South Australia. He worked as a sea captain for the East India Company in the whaling industry. He is notable for fathering explorer Frederick Charles Porter and being the cousin of Australian settler and shipping company operator William Field Porter.
He is associated with several landmarks, having established a grocery store and a small farm. His home was converted into Sirius Private Hospital, a building which stands today for its historical significance to the area.