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.
According to legend the Rat Cook served an Andal king, identified either as King Tywell II of the Rock or King Oswell I of the 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.
The Sothoryi from regions further south are more savage, and are known for cannibalism.
A Dance with Dragons
The thousands of survivors from the siege of Astapor resort to cannibalism of the diseased refugees.
During King Stanni’s harsh winter campaign, 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.