Geoffroy Saint-Hilaire
Geoffroy Saint-Hilaire may refer to:
- Étienne Geoffroy Saint-Hilaire, French naturalist
- Isidore Geoffroy Saint-Hilaire, French zoologist who coined the term ethology, son of Étienne Saint-Hilaire
- Albert Geoffroy Saint-Hilaire, French zoologist, coined the binomial nomenclature name for the Chinese monal pheasant, son of Isidore Saint-Hilaire