A cangue is a device that was used for public humiliation and corporal punishment in China and some other parts of East Asia and Southeast Asia until the early years of the twentieth century. It was also occasionally used for or during torture. Because it restricted a person's movements, it was common for people wearing cangues to starve to death as they were unable to feed themselves.

Although there are many different forms, a typical cangue would consist of a large, heavy flat board with a hole in the center large enough for a person's neck. The board consisted of two pieces. These pieces were closed around a prisoner's neck, and then fastened shut along the edges by locks or hinges. The opening in the center was large enough for the prisoner to breathe and eat, but not large enough for a head to slip through. The prisoner was confined in the cangue for a period of time as a punishment. The size and especially weight were varied as a measure of severity of the punishment. The Great Ming Legal Code published in 1397 specified that a cangue should be made from seasoned wood and weigh 25, 20 or 15 jin (roughly 20–33 lb or 9–15 kg) depending on the nature of the crime involved. Often the cangue was large enough that the prisoner required assistance to eat or drink, as their hands could not reach their own mouth.