Oranga is a small residential suburb in Auckland, New Zealand. It is located nine kilometres to the southeast of the city centre, between the commercial suburbs of Te Papapa and Penrose to the south and east, and the residential suburbs of One Tree Hill and Onehunga to the north and west, with which it is frequently confused.

It used to be a neighbourhood of state houses for low-income families, but it is rapidly gentrifying. Private investors have bought up many of the state houses for renovation, and to subdivide their generous sections. Real estate agents increasingly advertise these houses as belonging to the wealthier suburb of One Tree Hill.