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 79 kilometres (49 mi) north of Sydney. It is an important population centre within the City of Gosford local government area.

There are many local restaurants with many types of cuisines including Chinese, Vietnamese, Italian, Indian, Fine Dining, Mexican and bistro type menus. Cafes are in abundance and are regular hot spots for the locals.

Woy Woy’s other local businesses include hairdressing, beauticians, clothing and accessory stores, banking institutions (including Westpac Bank, NAB, Commonwealth Bank & St George Bank).

There is plenty of shopping spots which include: Deepwater Plaza (Coles Supermarket, Kmart, Payless Shoes, Supa IGA, Strandbags, OPSM, Travelworld, Flight Centre, Susanne Grae, Just Jeans, Lowes, Deepwater Surf Co. and other clothing boutiques plus a number of hairdressing/beauty salons and butchers among some) and Peninsula Plaza (Woolworths, Michel’s Patisserie, Amcal Chemist plus butcher, hairdressing salon and newsagency among some).

The Everglades Country Club has motel facilities and hosts the local bowling and golfing enthusiasts.

Woy Woy Leagues Club and Woy Woy Bowling Club (The Sporties) is great for the locals to meet at.

Surrounding suburbs include: Woy Woy Bay, Horsfield Bay, Phegans Bay, Umina Beach, Ettalong Beach, Booker Bay, Blackwall, St Huberts Island, Daleys Point, Empire Bay, Bensville, Pearl Beach, Patonga Beach, Koolewong. The town of Woy Woy is only a short drive to the popular towns of Terrigal & Avoca Beach.

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 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.)

The double name is a corruption of the indigenous term apparently taken from the local Darkinjung Aboriginal people, and reputedly means 'big lagoon' or 'much water', referring to the deep tidal channel adjacent to the town centre.

Woy Woy developed rapidly as a small coastal resort north of Sydney with the construction in 1888 of the northern railway.

Woy Woy is also home to several sporting teams which compete in Central Coast competitions, including the Roosters (rugby league - competed in Sydney's Jim Beam Cup, but not any more), Sharks (cricket), Southern & Ettalong United FC (football), Lions (rugby union) and the Peninsula Swans (Australian rules). The $24 million Peninsula Leisure Centre opened on 29 October 2005.

Woy Woy has one Catholic school, St John the Baptist Primary School, located in Dulkara Road, Woy Woy. There are also two public primary schools, Woy Woy South and Woy Woy, with the senior campus of Brisbane Water Secondary College also located within Woy Woy.