Waitemātā Harbour is the main access by sea to Auckland, New Zealand. For this reason it is often referred to as Auckland Harbour and is crossed by the Auckland Harbour Bridge, despite the fact that it is one of two harbours surrounding the city. The Waitemātā forms the north and east coasts of the Auckland isthmus. It is matched on the south by the shallower waters of Manukau Harbour.
With a size of 70 square miles, it connects the city's main port and the Auckland waterfront to the Hauraki Gulf, and the Pacific Ocean. It is sheltered from Pacific storms by Auckland's North Shore, Rangitoto Island and Waiheke Island.
The name is from the Māori language, with Wai te Mataa referring to obsidian glass. The 'sparkling waters' (a later translation of the meaning) of the harbour were said to glint like the volcanic glass prized by these early arrivals to the harbour.