The Bombay Hills are a range of hills to the south of Auckland, New Zealand. Though only a small and seemingly insignificant range of hills, they lie at the southern boundary of the Auckland region, and serve as a divide between Auckland and the Waikato region. There is a 19th-century settlement, Bombay, on the old main road south of Auckland, the Great South Road.

The Great South Road is a major arterial road on the Auckland isthmus and South Auckland. Originally the northern section of the earliest highway between Auckland and Wellington, in the North Island of New Zealand, the road was the main route connecting Auckland to Hamilton. Many former sections of the road have been integrated into the Waikato Expressway. Currently four sections of the road remain: Epsom to Bombay in Auckland, the main street in Pōkeno, the former route of State Highway 1 that links the towns of Huntly, Taupiri, Ngāruawāhia and Horotiu, and the main road in Ōhaupō.