Claude Marie Jules Bourcier (19 February 1797 – 9 March 1873) was a French naturalist and expert on hummingbirds. Bourcier was born in Cuisery, Saône-et-Loire. He was the mayor of Millery, Rhône from 1832 to 1837, and he was the French consul to Ecuador from 1849 to 1850. In 1857, he became a corresponding member of the Société linnéenne de Lyon. Bourcier named a number of new hummingbird species, either alone or with other ornithologists, such as Adolphe Delattre and Martial Etienne Mulsant. The following hummingbird species bear his name: He died in Batignolles, Paris, in 1873.