Cannibalism is the act or practice of humans eating the flesh or internal organs of other human beings.
According to The Edge of the World by Maester Balder, in ancient days men of Skagos sailed to the nearby island Skane, seizing all the women, killing all the men, and feasting on their flesh for a fortnight, in what was known as the Feast of Skane.
According to legend the Rat Cook served an Andal king—identified either as Tywell II, King of the Rock, or Oswell I, King of Mountain and Vale—a pie that was made of bacon and, unknown to the king, the king's son. The cook killed the prince in revenge for a wrong the king supposedly did to him. The king was unaware of this, however, as he ate and praised the taste and asked for a second piece.
Cannibal Bay is a legendary place where it is claimed some of the thousand ships entombed there are inhabited by the descendants of the original crews, who survive by feasting on the flesh of the newly-trapped sailors.
A Feast for Crows
Once in Harrenhal Shitmouth and Raff the Sweetling inform Jaime that Ser Gregor Clegane, in a mockery of Vargo Hoat's preferred way of torturing his prisoners, cut off Vargo's limbs piece by piece over an extended period of time while he had the wounds bandaged so that Vargo stayed alive. Vargo first lost his hands and feet, then his arms and legs. The extremities as well as other parts of Vargo's body were then fed as "roast goat" to northern prisoners that Gregor brought to Harrenhal, including Ser Wylis Manderly, as well as to Vargo himself.
A Dance with Dragons
The thousands of survivors from the siege of Astapor resort to cannibalism of the diseased refugees.
During King Stannis Baratheon's harsh winter march on Winterfell, four House Peasebury soldiers are staked and burned by queen's men at a crofters' village for cannibalism. It is rumored that Robin Peasebury may also have eaten human flesh.
Rhaegar Frey, Jared Frey, and Symond Frey go missing after departing White Harbor. During the wedding of "Arya Stark" to Ramsay Bolton at Winterfell, Lord Wyman Manderly presents three huge pies at the wedding feast while requesting a song from the singer Abel about the Rat Cook, implying the three Freys were actually present at the wedding after all.
Men may eat the flesh of beasts and beasts the flesh of men, but the man who eats the flesh of a man is an abomination.
Better a craven than a cannibal.
- A Feast for Crows, Chapter 15, Samwell II.
- A Dance with Dragons, Chapter 17, Jon IV.
- A Storm of Swords, Chapter 15, Jon II.
- Fire & Blood, Jaehaerys and Alysanne - Their Triumphs and Tragedies.
- The World of Ice & Fire, The Vale.
- A Storm of Swords, Chapter 56, Bran IV.
- A Feast for Crows, Chapter 27, Jaime III.
- The Princess and the Queen.
- The World of Ice & Fire, Beyond the Free Cities: The Shivering Sea.
- A Dance with Dragons, Prologue.
- The World of Ice & Fire, The Bones and Beyond: Yi Ti.
- George R. R. Martin's A World of Ice and Fire, Adakhakileki.
- George R. R. Martin's A World of Ice and Fire, Cannibal Sands.
- The World of Ice & Fire, Beyond the Free Cities: Sothoryos.
- A Feast for Crows, Chapter 29, The Reaver.
- A Dance with Dragons, Chapter 62, The Sacrifice.