Mount Grenfell Historic Site is an Aboriginal rock art site, about 40 kilometres northwest of Cobar, in the arid lands in central west New South Wales, Australia. It is a spiritually important place for its Aboriginal owners, the Ngiyampaa Wangaaypuwan people. Hundreds of ancient rock drawings of humans, animals and the natural environment can be found at this historically invaluable site.
On 17 July 2004, the site was handed back by the Australian government to the Ngiyampaa Wangaaypuwan people, but is leased back to the NSW government.
- "Mount Grenfell Historic Site: return to Aboriginal ownership". New South Wales Department of Environment, Climate Change and Water. 3 June 2010.
- Photos of Mount Grenfell Historic Site by Paul Dudley