铁陨石（英语：Iron meteorite），又称陨铁，是包含大量的铁-镍合金的陨石。在这些陨石内的金属被称为「陨铁」，很可能是人类最早可以使用的铁的来源。

与石陨石相比，它们是相当罕见的，在墬落陨石中仅占5.7%的比例，但在历史上发现的陨石数目中它们占的比例却很大。这是基于以下的原因：

事实上，铁陨石的质量几乎占已知陨石的90%，大约500公吨。所有已知的大陨石，包括最大的霍巴陨铁，都是铁陨石。

Iron meteorites are meteorites that consist overwhelmingly of an iron–nickel alloy known as meteoric iron that usually consists of two mineral phases: kamacite and taenite. Iron meteorites originate from planetary cores of planetesimals.

The iron found in iron meteorites was one of the earliest sources of usable iron available to humans, before the development of smelting that signaled the beginning of the iron age.