玉米蛇（学名：Pantherophis guttatus）是一种原产于北美洲的食鼠蛇，由于它腹部的斑点状花纹看起来像玉米而得名「玉米蛇」。玉米蛇是游蛇科最为常见的宠物蛇。

成年玉米蛇长度约为1.2至1.8米，原生种为橘黄色，具有带黑边的橘红色豹斑蛇属特有花纹。 很多人会将它和同属而常见的豹斑蛇混淆，玉米蛇和豹斑蛇最大的外观区别是腹部具有彩色斑点，头部有花纹。 玉米蛇野生环境下可存活6至8年，但人工饲育环境下最长可至23年。

The corn snake (Pantherophis guttatus) is a North American species of rat snake that subdues its small prey by constriction. It is found throughout the southeastern and central United States. Their docile nature, reluctance to bite, moderate adult size, attractive pattern, and comparatively simple care make them popular pet snakes. Though superficially resembling the venomous copperhead and often killed as a result of this mistaken identity, corn snakes are harmless and beneficial to humans. Corn snakes lack venom and help control populations of wild rodent pests that damage crops and spread disease.