Yanchep is an outer coastal suburb of Perth, Western Australia, 56 kilometres (35 mi) north of Perth's central business district. It is part of the City of Wanneroo local government area. It was built by entrepreneur Alan Bond in the 1970s for the 1977 America's Cup. The area covers the urban centre of Yanchep as well as Yanchep National Park in its entirety.
Yanchep is bounded to the north-west by Two Rocks and to the south by the rural localities of Eglinton, Carabooda and Pinjar. The non-metropolitan Shires of Gingin and Chittering surround Yanchep's northern and eastern boundaries. West of Yanchep is the Indian Ocean.