Palm Beach is a suburb in the Northern Beaches region of Greater Sydney, in the state of New South Wales, Australia. Palm Beach is located 41 kilometres (25 mi) north of the Sydney central business district, in the local government area of Northern Beaches Council. Palm Beach sits on a peninsula at the end of Barrenjoey Road near Pittwater and is the northernmost beach in the Greater Sydney Metropolitan area. The population of Palm Beach was 1,593 as at the 2016 census.

The Barrenjoey Head Lighthouse is a heritage-listed lighthouse at Barrenjoey Headland, Palm Beach, Northern Beaches Council in Sydney, New South Wales, Australia. It was designed by James Barnet, the New South Wales Colonial Architect and built by Isaac Banks. It is also known as Barrenjoey Head Lightstation. The property is owned by Office of Environment and Heritage, an agency of the Government of New South Wales. The lightstation was added to the New South Wales State Heritage Register on 2 April 1999.