死亡蛇属（学名：Acanthopis），又称棘蛇、死亡蝮蛇，是蛇亚目眼镜蛇科有毒蛇属，分布于澳洲、新畿内亚一带，是当地的特有种，亦是世界上毒素最强的毒蛇之一。其学名「Acanthopis」来源于希腊语「acanthos / ἄκανθος」及「ophis / ὄφις」，意思分别是「棘刺」及「蛇」，大概是根据死亡蛇尾巴上明显突起的尖刺而命名。目前共有7个物种暂被确认（事实上死亡蛇属下的物种数量至今尚未有明确结论，学者将其范围定于4种至15种之间。）

Acanthophis is a genus of elapid snakes. Commonly called death adders, they are native to Australia, New Guinea and nearby islands, and are among the most venomous snakes in the world. The name of the genus derives from the Ancient Greek acanthos/ἄκανθος "spine" and ophis/ὄφις "snake", referring to the spine on the death adder's tail.