The SWA Open Water Swimming Series: Mullaloo is the fifth round of the SWA Open Water Swimming Series.

Held at Mullaloo Beach, Mullaloo, Western Australia, this event offers 500m, 1.25km, 2.5km, 5km, 7.5km and 10km open water swims in an around the buoy course format.

This event also doubles as an official qualifier swims for the Rottnest Chanel Swim and Port to Pub events.