Tweed Heads is a coastal city at the mouth of the Tweed River in the Northern Rivers region of the state of New South Wales, Australia. Tweed Heads is the northernmost town in New South Wales, and is located in the Tweed Shire local government area. It is situated 830 km (520 mi) north of Sydney and 103 km (64 mi) south of Brisbane. The town is next to the border with Queensland and is adjacent to its "twin town" of Coolangatta, which is a suburb of the Gold Coast in Queensland.

The Tweed River is a river situated in the Northern Rivers region of New South Wales, Australia. From the middle reaches of its course, the state boundary between New South Wales and Queensland is located approximately 10 kilometres (6.2 mi) north.