蚓蜥，又名蠕蜥，是蚓蜥亚目（学名：Amphisbaenia）动物的总称，与有鳞目中的蛇和蜥蜴是近缘物种。蚓蜥亚目中有很多种蚓蜥拥有深红色身体，且外表看起来非常像蚯蚓和蚓螈。蚓蜥主要分布于非洲和南美洲，还有小部分种分布在西亚、伊比利亚半岛、中美洲、加勒比地区、佛罗里达半岛、下加利福尼亚半岛和墨西哥中部。

人们对蚓蜥的了解很少，因为它们是穴居动物而且比较少见。人们除了解剖它们外对它们一无所知，而解剖本身也很困难，因为它们的解剖结构实在太小了。蚓蜥亚目中有很多种的体长小于150 mm。

Amphisbaenia (called amphisbaenians or worm lizards) is a group of usually legless squamates, comprising over 180 extant species. Amphisbaenians are characterized by their long bodies, the reduction or loss of the limbs, and rudimentary eyes. As many species have a pink body and scales arranged in rings, they have a superficial resemblance to earthworms. While the genus Bipes retains forelimbs, all other genera are limbless. Although superficially similar to the snakes and Dibamidae, recent phylogenetic studies suggest that they are most closely related to the Lacertidae. Amphisbaenians are widely distributed, occurring in North America, Europe, Africa, South America, and the Caribbean. Most species are less than 6 inches (150 mm) long. Little is known of them outside of their anatomy, and even that is difficult to study due to the mechanics of dissecting such small animals.