Lake Murray is the largest lake in Papua New Guinea. It is located in the Middle Fly District, Western Province and covers approximately 647 km². In the rainy season, the lake increases five-fold. It has a highly convoluted shoreline more than 2000 km long. Indigenous tribes of around 5000 people own the lake and the surrounding one million hectares of forest.
Also, a cryptid known as "Murray" purportedly lives, or used to live, in the lake. This creature was described as resembling a theropod dinosaur such as Tyrannosaurus.