Woy Woy is a coastal town and a southern suburb of the Central Coast region of New South Wales, Australia, located on the southern reaches of Brisbane Water north of Sydney. It is an important population centre within the City of Gosford local government area.
Woy Woy is located in the northern half of the Woy Woy Peninsula, a densely populated estuarine peninsula that also includes the districts of Umina Beach, Ettalong Beach and Blackwall, in addition to several small sub-districts. The Woy Woy Peninsula is the most populous area of the Central Coast. The historical and commercial core of Woy Woy is located around the railway station at the northern tip of the peninsula while its residential districts merge imperceptibly southwards with Umina and Ettalong. (Woy Woy officially ends at Veron Road and Gallipoli Avenue; and Umina begins beyond this.)
Woy Woy is considered a dormitory town of Sydney.