Twin Lakes is a complex of two large lakes in Lake Clark National Park in the U.S. state of Alaska near the northeast corner of Lake and Peninsula Borough. It contains a 6-mile long (9.7 km) upper lake and a smaller 4-mile long (6.5 km) lower lake, joined by a short connecting stream. The lakes outflow westward into the Chilikadrotna River (and eventually into the Mulchatna and Nushagak Rivers and Nushagak Bay). It is quite remote and unpopulated, except in the late summer as it is a popular hunting spot.
The lake complex was the retirement home of amateur naturalist Richard Proenneke (1916–2003), who spent most (1968–1998) of the last 30 years of his life living there in a log cabin he built by hand. (See One Man's Wilderness: An Alaskan Odyssey and Alone in the Wilderness).
In the games Metal Gear Solid and its remake Metal Gear Solid: The Twin Snakes, the main character Solid Snake resided in Twin Lakes prior to the events of the game. The location was likely chosen for its name, as a major focus of the game is Solid Snake's relationship to his twin, the antagonist Liquid Snake.