Marayong is a suburb of Sydney, in the state of New South Wales, Australia.

Marayong is located approximately 32[2] kilometres north west of the Sydney central business district, in the local government area of the City of Blacktown and is part of the Greater Western Sydney region.

The name 'Marayong' is derived from the Dharug language word 'Mariyung', which means emu or place of cranes.

[3][4] Around 1900–1905, large areas were subdivided and market gardens and poultry farms were established.

There is also a Catholic primary school, St Andrews Primary and a high school St Andrews College which is divided into two campuses, the Holy Family campus on Quakers Road catering to years 7–10 and the John Paul II senior campus on Breakfast Road.