Mannum Waters Marina is a purpose-built, privately managed marina on the River Murray at Mannum, South Australia. The facility was designed specifically to reduce the environmental impact and erosion associated with permanent moorings on the river itself.

The marina contains over 150 houseboat berths, available in 8-metre and 10-metre widths, each extending 39 metres in length.

Berths are fully serviced with mains water, metered power, waste disposal, pump-out services, mooring and tie-up poles, and walkway/loading ramps. Vehicle access is provided via a coded security gate, with car parking allocated to each berth.

Each houseboat berth holds its own freehold title. The marina also permits permanent residential living and is managed by a Community Corporation.