Ocean Reef Marina is a development project in Ocean Reef, Western Australia to construct a new marina with commercial and residential areas at the existing Ocean Reef Boat Harbour. The site is being developed by DevelopmentWA; construction of its two breakwaters started in April 2021, with the whole project expected to be fully completed in 2036 and then becoming part of the City of Joondalup. The concept for a marina by developers in the area of Mullaloo and Ocean Reef had been proposed as far back as 1973.