Georges Eugène Henri Roger (4 June 1860 – 19 April 1946)[1] was a French physiologist.

In the field of experimental pathology, he performed research of cholelithiasis and hepatic disease.

Among his written works were articles on diseases of the liver, gastro-intestinal tract and spinal cord.

In addition his 1897-98 lectures at the University of Paris were translated into English, and published as "Introduction to the Study of Medicine" (1901) With Georges-Fernand Widal (1862-1929) and Pierre Teissier (1864-1932), he was co-author of the 22-volume Nouveau traité de médecine (New Treatise of Medicine), which was a comprehensive French masterpiece of anatomy and pathology.

His name is lent to the eponymous "Roger's reflex"; a term that is sometimes used to describe excessive salivation due to irritation of the lower part of the esophagus.