George Emerson Brewer (1861-1939) was a long-time professor of clinical surgery at the College of Physicians & Surgeons of Columbia University and attending surgeon at Roosevelt and Presbyterian Hospitals.

In May 1917, Brewer became Director of Base Hospital #2, the Presbyterian Hospital Unit, in Étretat, France. In the summer of 1917 he was part of Casualty Clearing Station #4 in the Passchendaele Campaign, where he was a member of the surgical team that tried to save Revere Osler, Sir William Osler's only child. In 1918 he became Consulting Surgeon to the 42nd Division of the American Expeditionary Force; he was later named Chief Consultant in Surgery to the First Army.