Marie Philibert Constant Sappey (1810 – 15 March 1896) was a French anatomist born in Cernon, near the city of Bourg-en-Bresse.
Later he became a professor of anatomy in Paris, and in 1862 was elected to the Académie Nationale de Médecine, becoming its president in 1887.
Sappey was a highly regarded anatomist remembered for his research of the lymphatic system.
In 1874 he published an anatomical atlas that included a detailed study of cutaneous lymphatic drainage.
Anatomist Henri Rouvière (1876-1952) continued Sappey's anatomical work of the human lymphatic system.