Frenchs Forest is a suburb of Sydney, in the state of New South Wales, Australia. It is located 17 kilometres north-east of the Sydney central business district, in the local government area of Northern Beaches Council. Frenchs Forest is part of the Northern Beaches region.

The suburb is named after the French family, who were among the earliest settlers in the area. The area was originally known as Forestville, but was changed to Frenchs Forest in the early 20th century.

The suburb is home to a number of parks and reserves, including the Garigal National Park, Davidson Park, and the Frenchs Forest Bushland Reserve. It is also home to the Frenchs Forest Aquatic Centre, which features a 50-metre pool, a leisure pool, and a gym.

Frenchs Forest is home to a number of schools, including Forest High School, Davidson High School, and Frenchs Forest Primary School. It is also home to the Northern Beaches campus of Macquarie University.

The suburb is served by a number of bus routes, as well as the Forestway Shopping Centre, which features a range of shops and services.

Frenchs Forest is a popular residential area, with a