野芥菜(Wild Radish，又名Jointed Charlock；学名：Raphanus raphanistrum)是一种属白花菜目十字花科的根类开花植物，是萝卜的近亲，但亦有人指它是萝卜的「祖先」（原始品种）。野芥菜原产于亚洲（亦有指原产于地中海，但被带到世界各地），但由于其极强侵入性的特质，这种植物目前在澳大利亚蔓延，经常都在路旁或其他荒废地被发现，被当地政府归为要消除的野草(weeds)种类。

这种植物亦有在美国东南部生产，花色通常都是淡黄色，在冬季有时会遍布整个田野。由于其外貌与芥辣很相似，所以经常被误认。野芥菜是花粉传播物种的重要花粉来源，特别是在冬季时的西方蜜蜂。

Raphanus raphanistrum, the wild radish or jointed charlock, is a flowering plant in the family Brassicaceae. It is sometimes claimed to be the ancestor of the edible radish, Raphanus sativus. Native to Asia (or, according to some authorities, the Mediterranean), it has been introduced into most parts of the world, and is regarded as a damagingly invasive species in many areas, for example Australia. It spreads rapidly, and is often found growing on roadsides or in other places where the ground has been disturbed.