Mount Nebo is a tall hill, part of the Mount Keira foothills on the edge of the suburban fringe of the town of Wollongong, New South Wales. Its summit (252 metres above sea level), is reached by a steep road (O'Brien's Road) from the suburb of Figtree. O'Brien's Road is unusual in that it was built as a private toll road in the early 19th century to connect Sydney and the Illawarra. Views from the top look over Wollongong, Lake Illawarra and the local mountains.
In recent years the council has stopped vehicles from continuing from the summit due to illegal dumping, and the road has become a track to O'Brien's Gap and Mount Brisbane, (469 metres above sea level).
The hill provides splendid views of Mount Kembla and Mount Keira and is popular for photograph taking. It is connected to the Illawarra escarpment by Nebo Ridge.