铁中毒是由于摄入铁过量引起的中毒表现。它并不少见，大多是由于误食过量硫酸亚铁所致。注射铁制剂过量可以发生严重中毒。若长期内服大量铁剂，可能引起肺、肝、肾、心、胰等处的含铁血黄素沉着症，并可导致栓塞性病变和纤维变性。

Iron poisoning is an iron overload caused by a large excess of iron intake and usually refers to an acute overload rather than a gradual one. The term has been primarily associated with young children who consumed large quantities of iron supplement pills, which resemble sweets and are widely used, including by pregnant women—see overnutrition (approximately 3 grams is lethal for a 2 year old). Targeted packaging restrictions in the US for supplement containers with over 250 mg elemental iron have existed since 1978, and recommendations for unit packaging have reduced the several iron poisoning fatalities per year to almost zero since 1998. No known cases of iron poisoning have been identified that are associated with iron mining.