Henderson is a major suburb of West Auckland, in the North Island of New Zealand. It is 13 kilometres (8.1 mi) west of Auckland city centre, and two kilometres (1.2 mi) west of the Whau River, a southwestern arm of the Waitematā Harbour. The suburb is located within the Henderson-Massey Local Board of the Waitākere Ward, one of the thirteen administrative divisions of Auckland Council.

West Auckland is one of the major geographical areas of Auckland, the largest city in New Zealand. Much of the area is dominated by the Waitākere Ranges, the eastern slopes of the Miocene era Waitākere volcano which was upraised from the ocean floor, and now one of the largest regional parks in New Zealand. The metropolitan area of West Auckland developed between the Waitākere Ranges to the west and the upper reaches of the Waitematā Harbour to the east. It covers areas such as Glen Eden, Henderson, Massey and New Lynn.