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

The club trains at Marion Outdoor Swimming Centre and Westminster School Pool on Monday 10.00–11.00am, Tuesday 6.00–7.30pm, Wednesday 10.00-11.00am, Thursday 10.00–11.00am, Thursday 6.00–7.30pm and Saturday 8.30–10.00am (Westminster School Pool) in winter, and Monday, Wednesday and Thursday 9.30-10.30am, Tuesdays & Thursdays 6.00-8.00pm and Saturdays 8.30-10.00am (Marion Outdoor Pool) in summer..