Marshall Mount is a suburb of Wollongong in New South Wales, Australia.

In 1829 Henry Osborne, a wealthy Irish immigrant, was granted 2,560 acres (10.4 km2) in the Dapto district known as Marshall Mount, where he settled with his wife Sarah Osborne (née Marshall) in 1833.

By the 1840s Henry had added to his estate by securing Charles Throsby Smith's "Calderwood" 1,280 acres (5.2 km2), Elyard's "Avondale", William Browne's "Athanlin" (Yallah), Brook's "Exmouth" and numerous smaller grants.

Marshall Mount was expanded to reach from Mullet Creek in the north to the Macquarie Rivulet in the south.

[1] Under the West Dapto Local Environmental Plan, Marshall Mount has been rezoned for residential development by the NSW State Government in 2018.