亚硝酸异戊酯（化学式：C₅H₁₁ONO）是异戊醇生成的亚硝酸酯。

无色至淡黄色、青黄色具有挥发性澄清液体。有水果香味。不溶于水，能溶于醇、醚。遇光和空气分解。

Amyl nitrite is the chemical compound with the formula C₅H₁₁ONO. A variety of isomers are known, but they all feature an amyl group attached to the nitrite functional group. The alkyl group is unreactive and the chemical and biological properties are mainly due to the nitrite group. Like other alkyl nitrites, amyl nitrite is bioactive in mammals, being a vasodilator, which is the basis of its use as a prescription medicine. As an inhalant, it also has a psychoactive effect, which has led to its recreational use.