Great Southern Masters are a masters swimming club located in the suburb of Strathalbyn, in the Alexandrina region of South Australia.

The club trains at Strathalbyn Pool and Fleurieu Aquatic Centre on Monday, Tuesday, Wednesday & Thursday 5:30-7.00pm (Strathalbyn) in summer, and Thursday 6:30-8:00pm and Saturday 8:00-9:30am (Fleurieu) in winter.