The Lennox Bridge, Glenbrook is a heritage-listed road bridge that carries the Mitchell's Pass across Brookside Creek, located at Glenbrook, in the City of Blue Mountains local government area of New South Wales, Australia. The bridge was designed by David Lennox and built from 1832 to 1833 by James Randall and other convicts. It is also known as Lennox Bridge or The Horseshoe Bridge. The property is owned by Blue Mountains City Council. It was added to the New South Wales State Heritage Register on 2 April 1999. The stone arch bridge is a single arch of 6 metres (20 ft) span and is 9 metres (30 ft) above water level, with a road width of 9 metres (30 ft).

Glenbrook is a township of the Lower Blue Mountains of New South Wales, Australia. It is located 63 kilometres west of the Sydney central business district, in the local government area of the City of Blue Mountains. As of the 2021 Australian census Glenbrook had a population of 5,078 people.