Marquis Giacomo Doria (1 November 1840 – 19 September 1913) was an Italian naturalist, botanist, herpetologist, and politician.

He was the founder of the Museo Civico di Storia Naturale in Genoa in 1867, and director from then until his death.

[1] It is now named for him as the Natural History Museum of Giacomo Doria.

[2] He collected numerous samples of plants, shells, butterflies, other insects and various animals in Persia with Filippo de Filippi (1862–63),[3] in Sarawak with Odoardo Beccari (1865–66), in the Red Sea (1879-1880) and in Tunisia (1881).

[1][5] In the scientific field of herpetology, he described many new species of amphibians and reptiles, including several he described with Wilhelm Peters.