Don Juan Pond is a small and very shallow hypersaline lake in the western end of Wright Valley (South Fork), Victoria Land, Antarctica, west from Lake Vanda. It is wedged between the Asgard Range to the south and the Dais Range to the north. On the west end is a small tributary and a rock glacier. With a salinity level of 33.8%, Don Juan Pond is the saltiest of the Antarctic lakes and the second saltiest body of water on earth behind the Gaet'ale Pond. This salinity allows the pond to remain liquid even at temperatures as low as due to the interference of salts with the bonding of water molecules.