Whangateau is a small coastal settlement on the east coast of the North Island of New Zealand. It is situated in Rodney District, part of the Auckland Region, and is on a peninsula stretching out into the Hauraki Gulf, north of Auckland. Whangateau is on the northern shore of Whangateau Harbour which is fed by the Omaha River and separated from Omaha Bay by the Maungatawhiri sandspit. The settlement is in two parts of 20 to 30 houses each. The main settlement includes a large public reserve with sports fields and a campground. The smaller settlement is Tram Car Bay, named for two tram cars which were used as holiday homes.