Marie Firmin Bocourt (1819 - 1904) was a French zoologist and artist.

In zoology, Bocourt collaborated with Auguste Duméril. In 1861, he was sent to Thailand (then called Siam), where he explored the fauna and brought back an important collection of specimen. In 1870 he published together with Duméril the Etudes sur les reptiles et les batraciens ("Studies on reptiles and amphibians"). In 1883, he published Etudes sur les poissons ("Studies on fishes") with Leon Vaillant .

As an artist, he was specialized on engravings, doing portraits of contemporary people as well as zoological illustrations.