温迪哥 （英语：Wendigo，英文中也拼写作windigo, weendigo, windago, waindigo, windiga, witiko, wihtikow等) 是一种食人的怪物，源自于美国和加拿大阿尔冈昆族(Algonquian)印地安人的传说。

它们被认为是遭恶灵附身的人类变化成具有人类或怪物特征的食人怪物，它们在面临危险的情况下同类相食, 并且传说似乎已经强调把这种做法列为禁忌。

温迪戈精神病（Wendigo psychosis） 是指由于传统与文化结合的紊乱（即“文化结合症候群”，culture-bound syndrome）而对人肉与恐惧有强烈欲望最终成为食人者的精神病患者。据说这曾经发生在阿尔冈昆文化中。

In Algonquian folklore, the wendigo or windigo is a cannibal monster or evil spirit native to the northern forests of the Atlantic Coast and Great Lakes Region of both the United States and Canada. The windigo may appear as a monster with some characteristics of a human, or as a spirit who has possessed a human being and made them become monstrous. It is historically associated with cannibalism, murder, insatiable greed, and the cultural taboos against such behaviours. The legend lends its name to the disputed modern medical term Wendigo psychosis, which is considered by psychiatrists to be a form of culture-bound syndrome with symptoms such as an intense craving for human flesh and a fear of becoming a cannibal. In some Indigenous communities, environmental destruction and insatiable greed are also seen as a manifestation of Windigo Psychosis.