箭毒（Curare，英语发音：/kjuːˈrɑːriː/），一种生物碱类骨骼肌松弛药。来源于植物，现代医学中用作全身麻醉的辅助用药，常与环丙烷合用，尤其常用于腹部手术。属于神经肌肉阻断药，注射后在神经末梢与乙酰胆碱竞争，阻断来自骨骼肌的神经冲动，使骨骼肌松弛无力。首先对脚趾、耳部及眼部肌肉发生作用，次及颈部、背部及四肢肌肉，最后影响呼吸肌。大剂量时因麻痹呼吸而致死。其粗制品即称“箭毒”，南美印第安人以此涂抹在箭头或飞镖上用于狩猎。它曾被世界各地狩猎采集阶段的人使用，各种各样的箭毒主要来自南美洲，箭毒蛙的皮肤分泌物和箭毒马鞍子是著名的箭毒，南美洲原住民用“ampi”一词作为他们所用的一系列植物萃取的箭毒的总称。现在在南美洲，非洲和亚洲还有人在使用它。

Curare /kʊˈrɑːri/ or /kjʊˈrɑːri/ is a common name for various plant extract alkaloid arrow poisons originating from Central and South America. These poisons function by competitively and reversibly inhibiting the nicotinic acetylcholine receptor (nAChR), which is a subtype of acetylcholine receptor found at the neuromuscular junction. This causes weakness of the skeletal muscles and, when administered in a sufficient dose, eventual death by asphyxiation due to paralysis of the diaphragm.