Atlantis Masters are a masters swimming club located in the suburb of Marion, in the Adelaide region of South Australia.

The club trains at Westminster School pool and Immanuel College pool on Tuesdays 7.00-8.30pm & Thursdays 6.30-8.00pm (SAALC), Saturdays 8.30-10.00am (ICP) in winter, and Tuesdays & Thursdays 6.30-7.45pm and Saturdays 8.00-9.30am (USP) in summer..