去氧鸟苷（Deoxyguanosine）是一种属于核苷的化合物，与鸟苷相似，但少了一个位于核糖2'位置上的氧原子，因此称为去氧鸟苷。若是在3'位置加上一个磷酸基团，可转变成为去氧鸟苷单磷酸。

Deoxyguanosine is composed of the purine nucleobase guanine linked by its N9 nitrogen to the C1 carbon of deoxyribose. It is similar to guanosine, but with one hydroxyl group removed from the 2' position of the ribose sugar (making it deoxyribose). If a phosphate group is attached at the 5' position, it becomes deoxyguanosine monophosphate.