Oruamo or Hellyers Creek is a stream and tidal estuary of Upper Waitematā Harbour in the Auckland Region of New Zealand's North Island.

[5] The traditional Tāmaki Māori name for the creek, Ōruāmō is a contraction of Ō-rua-ā-Mōkai-ō-Kahu ("The Lair of Mōkai ō Kahu"), referring to the guardian taniwha associated with Kahumatamomoe of the Arawa migratory canoe.

A rock at the mouth of the creek, Te Ure tū ā Hape, recalls the visit of Rakatāura, the tohunga of the Tainui migratory canoe.

[12] During the early colonial era, wharfs on the creek were the main means of transportation for communities of the western North Shore,[3] such as Greenhithe, Beach Haven and Glenfield (then known as Mayfield).

This population explosion led the Waitemata County Council to announce plans for a landfill in 1969, in reclaimed land of Oruamo or Hellyers Creek.