Mona Vale is a suburb of Sydney, in the state of New South Wales, Australia. It is located 28 kilometres north of the Sydney central business district, in an area known as the Northern Beaches. Formerly the administrative centre of Pittwater Council, it is now located in the local government area of Northern Beaches Council. The traditional custodians of the area are the Garigal people. It is often colloquially referred to as "Mona".

The Northern Beaches is a region within Northern Sydney, in the state of New South Wales, Australia, near the Pacific coast. This area extends south to the entrance of Port Jackson, west to Middle Harbour and north to the entrance of Broken Bay. The area was formerly inhabited by the Garigal or Caregal people in a region known as Guringai country.