Koolewong Marina sits on Brisbane Water at 19 Brisbane Water Drive, Koolewong, on New South Wales's Central Coast, roughly an hour's drive from Sydney.

Completed in February 2017, it offers 50 floating berths accommodating vessels up to 25–30 metres, including catamarans, yachts, and cruisers. The marina features a vessel pump-out system, high-tech security, and on-site supervision seven days a week.

Boat maintenance, repair services, and brokerage are also available.

Its position on Brisbane Water puts boaters within easy reach of Broken Bay (approximately 13 nautical miles) and Sydney Harbour (approximately 18 nautical miles), while Brisbane Waters National Park borders the area for those interested in bushwalking or paddling.