The Baigong Pipes are a series of pipe-like features found on and near Mount Baigong about 40 km southeast of the city of Delingha, in the Haixi Mongol and Tibetan Autonomous Prefecture, Qinghai Province, China.These pipe-like features are cited by various web pages as an example of an out of place artifact (OOPArt), and have been put forward as a possible sign of extraterrestrial life having visited Earth.

Two Baigong Pipes have been reported from the largest cave. One of these is described as being 40 cm (16 in) in diameter and preserved as a reddish-brown half-pipe. Within the same cave, another pipe-like feature of similar diameter was also found. Dozens of upright pipe-like features, about 10 to 40 cm (4 to 16 inches) in diameter, were also found protruding from Mount Baigong above the largest cave.

Additional Baigong Pipes were found on shore and within Toson Lake, which lies 80 meters (260 feet) from the mouth of the largest cave. On the beach of Lake Toson, about 40 meters (130 feet) from the mouth of the largest cave, apparently flat-lying, hollow, pipe-like features were found. These reddish-brown pipe-like features range in diameter from 2 to 4.5 cm (0.8 to 1.8 inch) and have an east-west orientation. Another group of pipe-like features, presumably vertical, either protrude from or lie just below the surface of the lake.
Associated with these pipe-like features are rusty scraps and ;strangely shaped stones. Analysis of the rusty scraps by Liu Shaolin at a local smeltery reportedly found that they consist of 30 percent ferric oxide and large amounts of silica dioxide and calcium oxide.