Following is a list of credit unions operating in South Australia (SA), a state in the southern central part of the country. Adelaide is the capital of the state, with population of over 1.3 million.

People's Choice Credit Union - The largest credit union in South Australia. People's Choice is a trading name of Australian Central Credit Union Ltd.

Credit Union SA - One of the leading credit unions in South Australia with around 50,000 members. It offers savings and transaction accounts, mortgages, car loans, personal and home loans, visa debit and visa credit cards, home insurance, travel and health insurance, motor insurance, landlord insurance, mobile and online banking, retirement planning, foreign cash and foreign exchange, telegraphic transfers, inward payments, superannuation, Bridges Financial Services, wills and estate planning services and more.

Fire Service Credit Union - A credit union for Firefighters, by Firefighters.

Police Credit Union

Alliance One Credit Union - Alliance One was acquired by Community CPS Australia Limited (trades as Beyond Bank) in July 2013.

Community CPS Australia Ltd was one of country’s four largest credit unions. In 2013, Community CPS became a mutual bank called Beyond Bank Australia.

Polish Community Credit Union merged with Community CPS Australia Ltd.

Powerstate Credit Union Ltd merged with Satisfac Direct Credit Union in 2009.

Satisfac Direct Credit Union Ltd merged with Powerstate Credit Union in August 2009.

Savings and Loans Credit Union (SA) merged with Australian Central Credit Union in December 2009, to form the second largest credit union in the country.