Geoffroy Saint-Hilaire may refer to:
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Étienne Geoffroy Saint-Hilaire (1772–1844), French naturalist
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Isidore Geoffroy Saint-Hilaire (1805–1861), French zoologist who coined the term ''ethology'', son of Étienne Saint-Hilaire
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Albert Geoffroy Saint-Hilaire
Albert Geoffroy Saint-Hilaire (December 2, 1835 – January 30, 1919) was a French zoologist who served as a director of the Jardin d'acclimatation du Bois de Boulogne in Paris from 1865 to 1893. He was the son of the zoologist Isidore Geoffroy Sai ...
(1835–1919), French zoologist, coined the binomial nomenclature name for the
Chinese monal
The Chinese monal or Chinese impeyan (''Lophophorus lhuysii'') is a pheasant. This monal is restricted to mountains of central China. The plumage is highly iridescent. The male has a large drooping purple crest, a metallic green head, blue bare sk ...
pheasant, son of Isidore Saint-Hilaire
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