马兜铃目（学名：Aristolochiales）在生物分类学上是双子叶植物纲中的一个目。在克朗奎斯特分类法等旧分类法中，此目只包含唯一一科——马兜铃科 （Aristolochiaceae），而较新的APG 分类法和APG II 分类法已撤销这个目，将马兜铃科并入胡椒目。

Aristolochiales is an order of flowering plants. It is not recognised in the APG or APG II systems, in which it is considered a synonym of Piperales. It also is not recognized in the Thorne system.

In the Cronquist, Dahlgren, Goldberg and Reveal systems it is composed of a single family, the Aristolochiaceae. In the Hutchinson system the carnivorous Nepenthaceae (now placed in Caryophyllales) and the parasitic Cytinaceae (now placed in Malvales) and Hydnoraceae (now placed in Piperales) are also included. In the Melchior (aka Engler) system Hydnoraceae and Rafflesiaceae (including Cytinaceae) are included in addition to Aristolochiaceae.