鞭蛛（学名：Amblypygi）亦称蝎蛛，是一种节肢动物，属于蛛形纲，整体外型类似蝎子但又像蜘蛛之间的无脊椎动物。此外鞭蛛亦被称为无尾鞭蝎，因为牠与鞭蝎有着相同的特征，惟属于一个完全不同的物种，而被命名为鞭蛛是因为牠们的尾部没有像部分蛛形纲家族一样拥有毒性的鞭毛，对人体完全无害。到2003年止已发现共有5科17属约155种鞭蛛。身体呈扁平状，有一对特化的触肢，类似感觉的器官，前方的螯夹有助于防御、捕捉猎物。

Amblypygi is an order of arachnid chelicerate arthropods also known as whip spiders and tailless whip scorpions (not to be confused with whip scorpions and vinegaroons that belong to the related order Thelyphonida). The name "amblypygid" means "blunt rump", a reference to a lack of the flagellum ("tail") that is otherwise seen in whip scorpions. They are harmless to humans. Amblypygids possess no silk glands or venomous fangs. They rarely bite if threatened, but can grab fingers with pedipalps, resulting in thorn-like puncture injury.