The State Bank of South Australia was a bank created in 1896 and owned by the Government of South Australia. The bank became the subject of a two-year South Australian Royal Commission upon its collapse in 1991. The surviving part of the bank now exists as BankSA.

BankSA, formerly known as the Bank of South Australia, the State Bank of South Australia and the Savings Bank of South Australia is the largest bank in South Australia. It is a subsidiary of Westpac.