Manly Boat Harbour, located in the coastal suburb of Manly in eastern Brisbane, Queensland, is claimed to be the largest boat harbour facility in the Southern Hemisphere.

The harbour features over 3,000 dry standings and wet berths, with two public boat ramps positioned at either end of the facility.

The southern ramp serves as a popular launch point for accessing the waters of Moreton Bay, suiting boating, fishing, and water sports. The harbour's sheltered position within the marina provides well-protected conditions for launching and retrieval.