烹刑，或称烹杀，是一种酷刑。施刑者先将犯人的衣服脱光，并将犯人推入一个如成人般高的大锅，放在柴火上烹煮。犯人大多数都因灼伤死去，有些最终全身烧焦。

著名神魔小说《封神榜》中，西周始祖西伯（后称周文王）被囚于羑里时，西伯之子伯邑考遭到妲己的陷害，被纣王处以烹刑，放在大锅里「烹为羹」。

司马迁《史记》记载，秦朝末年的项羽也时常使用这样的刑罚，他曾烹杀不肯屈服的汉将周苛；也曾威胁要把汉王刘邦的父亲烹杀，不过刘邦表示并不在乎，最后项羽只好放弃这个想法。

受到此刑罚的知名人士有齐哀公、郦食其、周苛、寒奡、石川五右卫门等。

Death by boiling was a method of execution in which a person is killed by being immersed in a boiling liquid such as oil or water. While not as common as other methods of execution, boiling to death has been used in many parts of Europe and Asia.