Mount George is a locality in the Australian state of South Australia located about 17 kilometres (11 mi) south-east of the state capital of Adelaide.[3]

It was established in 1999 with its name being derived from the . Its boundaries were varied in August 2002 when some land was added to the adjoining locality of Stirling and again in August 2005 when land was added to Balhannah.[2]

The Mount George Conservation Park has a stretch of the Heysen Trail passing through it.[6]

It was home to Alexander Downer and his family until 2014.[7]

The principal land use in the locality is “rural living” which is a mix of farming and residential development. Some land within the locality has been proclaimed for conservation purposes as part of the following protected areas - the Kenneth Stirling Conservation Park and the Mount George Conservation Park.[2][8]

Mount George is located within the federal division of Mayo, the state electoral district of Kavel and the local government area of the Adelaide Hills Council.[2]