Hunter Watt Scarlett (October 16, 1885 – December 23, 1954) was a notable ophthalmologist, and is best known for his college football career for the Penn Quakers from 1904 to 1908.

During the season, the Quakers out-scored their opponents, 215-18, and their perfect record was marred only by a 6-6 tie against the Carlisle Indians.

One of Scarlett's articles on a form of diplobacillus "not yet described," causing corneal infection, was titled "Diplobacilli scarletti".

In order to operate at the Whitney War Hospital, he was usually forced to leave Paris at sundown in an unlighted automobile.

Operating was done there at night with inadequate lighting and equipment, and his return trip to Paris was made just before dawn.

In 1916, after two years of acting chief of two war hospitals and assistant at a third, Scarlett was taken seriously ill with what appeared to be meningitis, but was later thought to be sleeping sickness.

At this time, he had been caring for a group was a part of General Gallieni's "taxicab army" that held the front line at the Marne river, during the first weeks of the war.