Port Bonython is the location of a deepwater port and proposed minerals precinct adjacent to Point Lowly in the Upper Spencer Gulf region of South Australia. It lies 16 km east-northeast of Whyalla, South Australia and approximately 250 km north-west of Adelaide, the State's capital city. The existing wharf is 2.4 kilometres long and is capable of berthing small Capesize ships with a maximum capacity of 110,000 tonnes. The wharf was established in 1982 and named after John Bonython, the founding chairman of Santos Ltd. The structure is leased to Santos Ltd. by the South Australian Government and is used for the export of hydrocarbon products.