
The Cobourg Peninsula is located 350 kilometres east of Darwin in the Northern Territory, Australia.
All of Cobourg Peninsula is part of Garig Gunak Barlu National Park, which also encompasses a few nearshore islands. Mostly a tourist attraction, it is known for its pristine wilderness. It is home to a large variety of sea life and the world's largest herd of pure-strain banteng. It is also renowned for its Aboriginal culture. While it is only sparsely inhabited today, it was once the site of an attempt at founding a major trading port on its northern shores, Port Essington, of which the ruins are still accessible today.