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.

Palm Beach is sometimes colloquially referred to as 'Palmy'; it is used for exterior filming of the soap opera Home and Away, as the fictional town of Summer Bay. It is also the subject of the 2018 film 'Palm Beach'. Despite the hefty property prices it remains a haven for a variety of artists. Writing celebrating this beach is featured in "Guide to Sydney Beaches" Meuse Press. Palm Beach housing ranges from cottages to grand estates, owned by some of the country's most affluent people. Many affluent and famous people can also be found holidaying at Palm Beach in summer. According to the Australian Taxation Office statistics for the financial year of 2016–2017, Palm Beach and the post code of 2108 was the wealthiest suburb in Australia, with an average taxable income of $230,000.